WO2021056334A1 - 用于激活辅小区的通信方法和装置 - Google Patents

用于激活辅小区的通信方法和装置 Download PDF

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Publication number
WO2021056334A1
WO2021056334A1 PCT/CN2019/108172 CN2019108172W WO2021056334A1 WO 2021056334 A1 WO2021056334 A1 WO 2021056334A1 CN 2019108172 W CN2019108172 W CN 2019108172W WO 2021056334 A1 WO2021056334 A1 WO 2021056334A1
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WIPO (PCT)
Prior art keywords
terminal device
secondary cell
network device
sent
sending
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PCT/CN2019/108172
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English (en)
French (fr)
Inventor
张力
韩静
薛剑韬
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华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP19946677.2A priority Critical patent/EP4027687A4/en
Priority to CN201980099908.3A priority patent/CN114342451B/zh
Priority to PCT/CN2019/108172 priority patent/WO2021056334A1/zh
Publication of WO2021056334A1 publication Critical patent/WO2021056334A1/zh
Priority to US17/704,528 priority patent/US20220217800A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver

Definitions

  • This application relates to the communication field, and more specifically, to a communication method and device for activating a secondary cell in the communication field.
  • Terminal equipment can simultaneously use multiple cells for uplink and downlink communications, thereby supporting high-speed data transmission.
  • one of the multiple cells is a primary cell (primary cell, PCell), and the other cells are secondary cells (secondary cell, SCell).
  • primary cell primary cell
  • secondary cell secondary cell
  • multiple cells can implement carrier aggregation (CA).
  • CA carrier aggregation
  • the terminal device needs to activate the secondary cell, and the cell that needs to be activated is divided into a known secondary cell and an unknown secondary cell.
  • the process of activating the cell by the terminal device depends on the reference signal (RS) sent by the network device.
  • RS reference signal
  • the period of the network device sending the RS is relatively long (for example, RS is a synchronization signal/physical broadcast channel block (synchronization signal/physical broadcast channel, In SSB), the period of SSB is usually set to be greater than or equal to 20 milliseconds), which results in a large delay in the secondary cell activated by the terminal device, which results in the terminal device not being able to use the bandwidth resources of the secondary cell in time, resulting in poor user experience.
  • RS is a synchronization signal/physical broadcast channel block (synchronization signal/physical broadcast channel, In SSB)
  • the period of SSB is usually set to be greater than or equal to 20 milliseconds), which results in a large delay in the secondary cell activated by the terminal device, which results in the terminal device not being able to use the bandwidth resources of the secondary cell in time, resulting in poor user experience.
  • the present application provides a communication method and device for activating a secondary cell, which can reduce the time delay of activating the secondary cell, thereby helping to improve the timeliness of the terminal equipment using the bandwidth resources of the secondary cell, and improving user experience.
  • a communication method for activating a secondary cell including: after detecting the secondary cell, a terminal device sends indication information to a network device, the terminal device receives an RS sent by the network device, and The RS is sent by the network device in response to the indication information, and the terminal device activates the secondary cell according to the RS.
  • the terminal device needs to detect the secondary cell first to obtain the coarse timing information of the secondary cell.
  • the time for the terminal device to complete the secondary cell detection is not fixed, but It is determined based on the realization of the terminal equipment and the conditions of the channel.
  • the terminal device can perform secondary cell detection based on the SSB, and can receive other reference signals sent by the network device through the secondary cell only after the secondary cell detection is completed. Therefore, if the activated cell is an unknown secondary cell, the network device does not know when to send the RS to the terminal device.
  • the terminal device can send indication information to the network device.
  • the indication information is used to trigger the network device to send RS through the secondary cell.
  • the network device After receiving the instruction information, the RS can be sent to the terminal device. In this way, the terminal device can be avoided waiting for the network device to send a reference signal with a longer period, which helps to reduce the delay of activating the secondary cell.
  • the terminal device can quickly use the secondary cell. Bandwidth resources help improve user experience.
  • the terminal device sends instruction information to the network device through the primary cell.
  • the indication information sent by the terminal device to the network device may carry the identifier of the secondary cell.
  • the terminal device sending the instruction information to the network device includes: the terminal device sends the instruction information to the network device at the first sending opportunity after detecting the secondary cell
  • the network device sends the indication information, and the first sending opportunity after the secondary cell is detected is no later than the first sending opportunity after the time threshold for detecting the secondary cell.
  • the time for the terminal equipment to complete the detection of the secondary cell is not fixed, but is determined according to the realization of the terminal equipment and the channel conditions and other conditions. Therefore, the time for each terminal device to detect the secondary cell is different.
  • the first sending opportunity thereafter sends the instruction information to the network device, and the first sending time of the instruction information is not later than the time threshold configured by the network device for the terminal device to detect the secondary cell (the time threshold is configured by the network device for the terminal device).
  • the universal detection time threshold of the secondary cell after the time threshold is exceeded, the secondary cell can no longer be detected, and each terminal device can detect the first transmission opportunity after the secondary cell in a time interval less than the time threshold. That is, the solution of the embodiment of the present application involves two first transmission occasions, where the first transmission occasion after the secondary cell is detected is before the first transmission occasion after the time threshold of the secondary cell is detected, and does not exceed the latest The first sending opportunity after detecting the time threshold of the secondary cell.
  • the terminal device never sends the indication information after detecting the secondary cell, so that the terminal device that can quickly complete the detection of the secondary cell sends the indication information as soon as possible, ensuring that the network device quickly detects the indication information, thereby triggering the network device to send the RS. Help reduce the delay of sending RS.
  • the method further includes: the terminal device receives first configuration information sent by the network device, and the first configuration information is used to instruct to send The first resource of the indication information; wherein the sending of the indication information by the terminal device to the network device includes: sending the indication information to the network device on the first resource indicated by the first configuration information.
  • the first resource may be a physical layer resource on the primary cell or the secondary cell.
  • the first resource may be a scheduling request (scheduling request, SR) resource or a physical random access channel (physical random access channel, PRACH) resource or a new physical layer resource. This is beneficial to distinguish between the resources of the terminal equipment to send the indication information and the resources of the terminal equipment to report the L1-RSRP.
  • the first resource indicated by the first configuration information is a resource used by the terminal device to report a layer 1 reference signal received power L1-RSRP.
  • the terminal equipment can reuse the resources of the terminal equipment to report L1-RSRP for the secondary cell. In this way, no additional resources are needed to send the instruction information, which can save resource overhead and avoid the need for network equipment to configure the terminal equipment.
  • the overhead caused by resources dedicated to sending instructions.
  • the indication information is used to indicate the synchronization signal/physical broadcast channel block SSB index corresponding to the transmission beam of the network device, and the number of the SSB index For one.
  • the terminal device only reports one SSB index, and when the network device sends the RS on the secondary cell in response to the indication information, it can use the transmission beam corresponding to the SSB index to send the RS to the terminal device.
  • the terminal device does not require the network device to send additional beam indication information (the sending beam indication information is used to instruct the network device to send data or RS to the terminal device when using the sending beam, for example, sending beam indication information can be transmission configuration indication information ( The transmission configuration indicator (TCI)) indicates its own transmission beam to the terminal device to enable the terminal device to learn the transmission beam (or QCL information) for transmitting the RS.
  • TCI transmission configuration indicator
  • the terminal device expects that the SSB corresponding to the RS and the SSB index indicated by the indication information is a quasi-co-located QCL.
  • the indication information is used to instruct the network device to send the SSB index corresponding to the beam, and the terminal device determines the receiving beam for the SSB corresponding to the SSB index during the cell detection process, and the terminal device can receive the network device through the receiving beam.
  • the SSB index corresponds to the RS sent by the sending beam, thus avoiding the terminal device from determining the receiving beam of the RS by receiving the sending beam indication information of the network device, reducing the signaling interaction in the process of activating the secondary cell, thereby reducing the auxiliary Cell activation delay.
  • the RS includes an SSB
  • the terminal device receiving the RS sent by the network device includes: the terminal device receiving the RS sent by the network device The SSB corresponding to the SSB index. That is, the terminal device can learn that the SSB sent by the network device is the SSB corresponding to the SSB index reported by the terminal device. The network device only sends the SSB corresponding to the SSB index reported by the terminal device to the terminal device, which can avoid the overhead of sending all the SSBs to the terminal device in order to activate the secondary cell network device for the terminal device.
  • the RS includes a tracking reference signal TRS.
  • the terminal device can use TRS to activate the secondary cell.
  • the RS includes channel state information CSI-reference signal RS.
  • the terminal device can use the CSI-RS to measure CSI and report the CSI to the network device.
  • the network device can learn that the terminal device has finished activating the secondary cell, and the network device can stop sending data for activating the secondary cell.
  • RS of the cell which can save signaling overhead.
  • the method further includes: the terminal device receives second configuration information sent by the network device, and the second configuration information is used to indicate The period and/or the number of times the network device sends the RS; wherein the terminal device receiving the RS sent by the network device through the secondary cell includes: the terminal device according to all instructions indicated by the second configuration information Receiving the RS sent by the network device through the secondary cell in the period and/or the number of times.
  • the terminal device Since the terminal device may need to receive the above RS multiple times during the activation process to complete the activation, the terminal device needs to know the time domain position of each occurrence of the above RS, so that the terminal device can follow the period and/or times indicated by the second configuration information Receiving the RS sent by the network device can effectively prevent the terminal device from being unable to receive the above RS sent periodically or semi-statically.
  • a communication method for activating a secondary cell including: a network device receives instruction information sent by a terminal device; the network device sends a reference signal to the terminal device through the secondary cell in response to the instruction information RS.
  • the terminal device needs to detect the secondary cell first to obtain the coarse timing information of the secondary cell.
  • the time for the terminal device to complete the secondary cell detection is not fixed, but Determined based on the realization of terminal equipment and conditions such as channel status.
  • the terminal equipment can perform secondary cell detection based on the SSB, and can receive other reference signals sent by the network equipment through the secondary cell only after the secondary cell detection is completed. Therefore, if the activated cell is an unknown secondary cell, the network device does not know when to send the RS to the terminal device.
  • the network device can receive the indication information sent by the terminal device.
  • the indication information is used to trigger the RS sent by the network device. In this way, the network device can send the terminal device to the terminal device after receiving the indication information.
  • Sending RSs in this way, can avoid the terminal equipment waiting for the network equipment to send a reference signal with a longer period, which helps to reduce the delay of activating the secondary cell, and the terminal equipment can quickly use the bandwidth resources of the secondary cell, which is beneficial to improve user experience.
  • the indication information is sent to the network device after the terminal device detects the secondary cell.
  • the method further includes: the network device sends first configuration information to the terminal device, where the first configuration information is used to indicate the The terminal device sends the first resource of the indication information; wherein the network device receiving the indication information sent by the terminal device includes: the network device receives the indication information sent by the terminal device on the first resource.
  • the network device Since the terminal device needs resources for sending physical layer information, the network device needs to configure the physical layer resources for the terminal device to send instruction information. In this way, the network device can receive the instruction information sent by the terminal device on the first resource, which can prevent the network device from not knowing which physical layer resources the terminal device sends the instruction information on, and on which resources the network device receives the instruction information and causes the instruction to be sent. Information failure.
  • the first resource may be a physical layer resource on the primary cell or the secondary cell.
  • the first resource is an SR resource or a PRACH resource or a new physical resource, which is beneficial to distinguish between the resource for the terminal device to send indication information and the resource for the terminal device to report the LS-RSRP.
  • the first resource indicated by the first configuration information is a resource used by the terminal device to report a layer 1 reference signal received power L1-RSRP.
  • the terminal equipment can reuse the resources of the terminal equipment to report L1-RSRP for the secondary cell. In this way, it can send indication information without occupying additional resources, thereby saving resource overhead and avoiding the need for network equipment to provide terminal equipment. Configure the overhead caused by resources dedicated to sending instructions.
  • the indication information is used to indicate the synchronization signal/physical broadcast channel block SSB index corresponding to the transmission beam of the network device, and the number of the SSB index is one .
  • the network device when the network device sends the RS on the secondary cell in response to the indication information, it can use the sending beam corresponding to the SSB index to send the RS to the network device.
  • the terminal device does not need the network device to send additional beam indication information (the sending beam indication information is used to instruct the network device to send data or RS to the terminal device when using the sending beam, for example, the sending beam indication information may be TCI) to the terminal device Instructing its own transmission beam can enable the terminal device to know the transmission beam (or QCL information) for transmitting the RS.
  • the network device ensures that the SSB corresponding to the SSB index indicated by the RS and the indication information is a quasi-co-located QCL.
  • the indication information is used to instruct the network device to send the SSB index corresponding to the beam, and the terminal device determines the receiving beam for the SSB corresponding to the SSB index during the cell detection process, and the terminal device can receive the network device through the receiving beam.
  • the SSB index corresponds to the RS sent by the sending beam, thus avoiding the terminal device from determining the receiving beam of the RS by receiving the sending beam indication information of the network device, reducing the signaling interaction in the process of activating the secondary cell, thereby reducing the auxiliary Cell activation delay.
  • the RS includes an SSB
  • the network device in response to the indication information, sends the RS to the terminal device through a secondary cell, including:
  • the network device sends the SSB corresponding to the SSB index indicated by the indication information to the terminal device through the secondary cell. That is, the terminal device can learn that the SSB sent by the network device is the SSB corresponding to the SSB index reported by the terminal device.
  • the network device only sends the SSB corresponding to the SSB index reported by the terminal device to the terminal device, which can avoid the reference signal overhead caused by the network device activating the secondary cell of the terminal device to additionally send all the SSBs.
  • the RS includes a tracking reference signal TRS.
  • the terminal device can use TRS to activate the secondary cell.
  • the terminal device can use the CSI-RS to measure CSI and report the CSI to the network device.
  • the network device can learn that the terminal device has finished activating the secondary cell, and the network device can stop sending data for activating the secondary cell.
  • RS of the cell which can save signaling overhead.
  • the RS further includes channel state information CSI-reference signal RS.
  • the method further includes: the network device sends second configuration information to the terminal device, where the second configuration information is used to instruct to send The period and/or times of the RS; wherein the network device responds to the indication information and sends the RS to the terminal device through the secondary cell, including: the network device responds to the indication information, according to the first 2. The period and/or the number of times indicated by the configuration information is to send the RS to the terminal device through the secondary cell.
  • the terminal device Since the terminal device may need to receive the above RS multiple times during the activation process to complete the activation, the terminal device needs to know the time domain position where the above RS appears each time, so that the network device can follow the period and/or times indicated by the second configuration information
  • the terminal device receives the RS sent by the network device according to the period and/or times indicated by the second configuration information, which can effectively prevent the terminal device from being unable to receive the above RS sent periodically or semi-statically.
  • an apparatus for activating a secondary cell is provided, and the apparatus is configured to execute the foregoing first aspect or the method in any possible implementation manner of the first aspect.
  • the apparatus may include a module for executing the method in the first aspect or any possible implementation of the first aspect.
  • an apparatus for activating a secondary cell is provided, and the apparatus is configured to execute the foregoing second aspect or the method in any possible implementation manner of the second aspect.
  • the device may include a module for executing the second aspect or the method in any possible implementation manner of the second aspect.
  • an apparatus for activating a secondary cell includes a memory and a processor.
  • the memory is used to store instructions. Execution of the instructions stored in the processor enables the processor to execute the method in the first aspect or any possible implementation of the first aspect.
  • an apparatus for activating a secondary cell includes a memory and a processor.
  • the memory is used for storing instructions. Execution of the instructions stored in the processor enables the processor to execute the second aspect or the method in any possible implementation manner of the second aspect.
  • this application provides a system for activating a secondary cell, the system including the device provided in the third aspect and the device provided in the fourth aspect; or
  • the system includes the device provided in the fifth aspect and the device provided in the sixth aspect.
  • this application provides a computer-readable storage medium in which computer instructions are stored.
  • the computer instructions When the computer instructions are run on the computer, the computer can execute the methods in the first aspect and any possible designs thereof. .
  • the present application provides a computer-readable storage medium in which computer instructions are stored.
  • the computer instructions When the computer instructions are executed on the computer, the computer executes the method in the second aspect and any possible designs thereof .
  • this application provides a chip including a processor.
  • the processor is used to read and execute the computer program stored in the memory to execute the method in the first aspect and any possible implementation manners thereof.
  • the chip further includes a memory, and the memory and the processor are connected to the memory through a circuit or a wire.
  • the chip further includes a communication interface.
  • the present application provides a chip including a processor.
  • the processor is used to read and execute the computer program stored in the memory to execute the method in the second aspect and any possible implementation manners thereof.
  • the chip further includes a memory, and the memory and the processor are connected to the memory through a circuit or a wire.
  • the chip further includes a communication interface.
  • the present application provides a computer program product, the computer program product includes computer program code, when the computer program code is run on a computer, the computer executes the first aspect and any of its possible designs method.
  • the present application provides a computer program product, the computer program product includes computer program code, when the computer program code runs on a computer, the computer executes the second aspect and any possible implementation manners thereof Methods.
  • Fig. 1 is a schematic diagram of a communication system provided by an embodiment of the present application.
  • Figure 2 is a schematic diagram of an application scenario provided by an embodiment of the present application.
  • Fig. 3 is a schematic diagram of a communication method for activating a secondary cell provided by an embodiment of the present application.
  • Fig. 4 is a schematic diagram of a time axis provided by an embodiment of the present application.
  • Fig. 5 is another schematic diagram of a communication method similar to activating a secondary cell provided by an embodiment of the present application.
  • Fig. 6 is a schematic diagram of an apparatus for activating a secondary cell provided by an embodiment of the present application.
  • FIG. 7 is another schematic block diagram of an apparatus for activating a secondary cell provided by an embodiment of the present application.
  • FIG. 8 is still another schematic block diagram of the apparatus for activating a secondary cell provided by an embodiment of the present application.
  • FIG. 9 is a schematic block diagram of another device for activating a secondary cell provided by an embodiment of the present application.
  • FIG. 10 is still another schematic block diagram of the apparatus for activating a secondary cell provided by an embodiment of the present application.
  • FIG. 11 is still another schematic block diagram of the apparatus for activating a secondary cell provided by an embodiment of the present application.
  • FIG. 12 is still another schematic block diagram of the apparatus for activating a secondary cell provided by an embodiment of the present application.
  • FIG. 13 is still another schematic block diagram of the apparatus for activating a secondary cell provided by an embodiment of the present application.
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • WCDMA broadband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD LTE Time division duplex
  • UMTS universal mobile telecommunication system
  • 5G fifth generation
  • NR new radio
  • FIG. 1 is a schematic diagram of a communication system suitable for this application.
  • the communication system includes network equipment and terminal equipment. Terminal equipment communicates with network equipment through electromagnetic waves.
  • the terminal device may be a device that includes wireless transceiver functions and can cooperate with network devices to provide users with communication services.
  • terminal equipment may refer to user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile equipment, user terminal, terminal, wireless communication equipment, User agent or user device.
  • the terminal device can be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), and a wireless Handheld devices with communication functions, computing devices, or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in future 5G networks or networks after 5G, etc., are not limited in the embodiments of the present application.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • a network device can be a device used to communicate with terminal devices.
  • it can be a base station (Base Transceiver Station, BTS) in a GSM system or CDMA, a base station (NodeB, NB) in a WCDMA system, or Evolutional Node B (eNB or eNodeB) in the LTE system
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • eNB or eNodeB Evolutional Node B
  • the network equipment can be a relay station, access point, in-vehicle equipment, wearable equipment, and network side equipment or network side equipment in future 5G networks or networks after 5G.
  • Network equipment in the PLMN network that will evolve in the future.
  • Network equipment may also be referred to as radio access network (RAN) equipment.
  • the RAN device is connected to the terminal device, and is used to receive data from the terminal device and send it to the core network device.
  • RAN equipment corresponds to different equipment in different communication systems. For example, it corresponds to base station and base station controller in 2G system, and corresponds to base station and radio network controller (RNC) in 3G system, and corresponds to evolution in 4G system.
  • the evolutional node B (eNB) corresponds to the 5G system in the 5G system, such as the access network equipment in the new radio access technology (NR).
  • the communication system in FIG. 1 is only an example, and the communication system applicable to this application is not limited to this.
  • the number of network devices and terminal devices included in the communication system may also be other numbers.
  • the communication system may also include more than two terminal devices.
  • FIG. 2 shows a schematic diagram of an application scenario of an embodiment of the present application.
  • Terminal equipment can simultaneously use multiple cells for uplink and downlink communications, thereby supporting high-speed data transmission.
  • one of the multiple cells is a primary cell (primary cell, PCell), and the other cells are secondary cells (secondary cell, SCell).
  • primary cell primary cell
  • secondary cell secondary cell
  • FIG. 2 only uses one secondary cell as an example for description.
  • Multiple cells in Figure 2 can implement CA.
  • CA allows physical downlink control channel (PDCCH) and physical downlink shared channel (PDSCH) to be in the same or different carrier component (CC), that is, cross-carrier scheduling is allowed .
  • CC carrier component
  • CC bandwidth part (bandwidth part, BWP), CC/BWP, CC and/or BWP are usually equivalently replaced because they all describe a section of frequency domain resources.
  • BWP bandwidth part
  • CC/BWP bandwidth part
  • CC and/or BWP are usually equivalently replaced because they all describe a section of frequency domain resources.
  • CC can also be equivalently replaced with a cell.
  • the PCell in Figure 2 is the cell where CA's terminal equipment resides.
  • the physical uplink control channel (PUCCH) corresponding to CA's terminal equipment is usually configured on the PCell to report physical layer indications on the PCell and SCell.
  • Information for example, physical layer indication information includes channel quality indicator (CQI), precoding matrix (precoding matrix, PMI), hybrid automatic repeat request acknowledgement (HARQ-ACK), etc.
  • the SCell in Figure 2 refers to a cell configured to CA terminal equipment through radio resource control (Radio Resource Control, RRC) connection signaling. It works on a secondary carrier component (SCC) and can provide more information for CA terminal equipment. More wireless resources.
  • the SCell can have only downlink or both uplink and downlink.
  • PCell and SCell in FIG. 2 may be cells generated by the same network device in FIG. 1, or may be cells generated by different network devices, which is not limited in the embodiment of the present application.
  • the SCell that the terminal device needs to activate may be a known secondary cell or an unknown secondary cell.
  • the terminal device can activate the SCell according to the synchronization signal/physical broadcast channel block (synchronization signal/physical broadcast channel, SSB) sent by the network device, but because the transmission cycle of the SSB is long (usually the cycle is greater than or equal to 20 milliseconds), therefore, This will cause a long delay for the terminal device to activate the SCell.
  • SSB synchronization signal/physical broadcast channel block
  • network equipment can send aperiodic or short-period channel state information (CSI)-reference signal (RS), and terminal equipment can use aperiodic or short-period CSI -RS activates SCell.
  • the period of the short-period CSI-RS is shorter than the period of the SSB.
  • the period of the network device sending the SSB is 20 milliseconds (ms)
  • the period of the CSI-RS is 10 ms, which can reduce the time delay for the terminal device to activate the SCell.
  • the network device sends the RS to the designated terminal device in time, which can avoid the time for the terminal device to wait for the periodic RS.
  • the network device may send a short periodic or aperiodic CSI-RS after sending the activation command, or 3 ms after sending the activation command.
  • the terminal device needs to detect the secondary cell first to obtain the coarse timing information of the secondary cell.
  • the time for the terminal device to complete the detection of the secondary cell is not fixed, but is implemented according to the terminal equipment. Determined by conditions such as channel conditions.
  • the terminal device can perform secondary cell detection based on the SSB, and can receive other reference signals sent on the secondary cell only after the secondary cell detection is completed. Therefore, if the activated secondary cell is an unknown secondary cell, the network device does not know when to send the CSI-RS.
  • the network device sends the CSI-RS prematurely, it will cause waste if the terminal device has not detected the SCell. Signaling; if the network device sends CSI-RS too late, it will increase the duration of SCell activation. For example, a network device sends a short-period or aperiodic CSI-RS at t1, and a terminal device detects an SCell at t2. If t1 is before t2, if the network device sends aperiodic CSI-RS, the terminal device will not receive it.
  • CSI-RS if the network device sends a short-period CSI-RS, the CSI-RS sent during t1-t2 will be wasted; for another example, the terminal device detects the SCell at t2, and the network device sends the short-period CSI-RS at t3.
  • Periodic or aperiodic CSI-RS, t2 is before t3, and the terminal device cannot use short periodic or aperiodic CSI-RS to activate the SCell during the period of t2-t3, which results in a longer delay for the terminal device to activate the SCell .
  • the method for activating a secondary cell proposed in this embodiment of the application, if the activated cell is an unknown secondary cell, after the terminal device detects the secondary cell, the terminal device can send indication information to the network device, and the network device responds The indication information sent by the terminal device sends the RS to the terminal device. In this way, the terminal device can be prevented from waiting for the network device to send the RS with a longer period, which can reduce the delay of activating the secondary cell.
  • FIG. 3 shows a communication method 300 for activating a secondary cell provided by an embodiment of the present application, including:
  • the terminal device After the terminal device detects the secondary cell, the terminal device sends instruction information to the network device, and the network device receives the instruction information sent by the terminal device.
  • the terminal device may send instruction information to the network device through the primary cell in the CA, and the network device receives the instruction information sent by the terminal device through the primary cell.
  • the detection of the secondary cell by the terminal device can be understood as: before the process of activating the secondary cell, the terminal device has not reported the measurement result of the secondary cell to the network device within a preset period of time, then the secondary cell is unknown After the unknown secondary cell is detected by the terminal device (the terminal device can use the SSB sent by the network device to detect the cell, for example, the SSB can be sent by the prior art network device to the terminal device), it can be understood as detecting the secondary cell Community.
  • the following describes the timing of the terminal device sending instruction information to the network device.
  • a time threshold for the terminal device to detect the secondary cell can be specified.
  • the terminal device must complete the secondary cell detection, and the terminal device sends the instruction information to the network device at the first sending opportunity after detecting the secondary cell.
  • the first sending opportunity after the secondary cell is detected is no later than the first sending opportunity after the time threshold. That is, the terminal device will send the indication information to the network device at the first sending opportunity after detecting the secondary cell.
  • the first sending opportunity after detecting the secondary cell can be earlier than the first sending opportunity after the time threshold or Send the instruction information to the network device at the first sending opportunity after the time threshold at the latest.
  • the terminal device never sends the indication information after detecting the secondary cell, so that the terminal device that can quickly complete the detection of the secondary cell sends the indication information as soon as possible, ensuring that the network device quickly detects the indication information, thereby triggering the network device to send the RS. Help reduce the delay of sending RS.
  • T3 is the above time threshold, which can specify that the terminal device needs to complete the detection of the secondary cell within T4. If a terminal device completes the secondary cell at T1 T2 is the first sending opportunity after the secondary cell is detected, and the terminal device needs to send the instruction information to the network device at T2; T4 is the first sending opportunity after the time threshold, T2 will not be later than T4, T2 Equal to T4 at the latest. This can prevent the terminal device from not sending the indication information after detecting the secondary cell, which is beneficial to the terminal device that quickly completes the detection of the secondary cell to send the indication information in time.
  • the network device may send first configuration information to the terminal device, and the first configuration information is used to instruct the terminal device to send the first resource indicating the information.
  • the terminal device can send the first configuration information to the network device on the resource indicated by the first configuration information.
  • Sending the instruction information the first resource may be a dedicated resource used for the terminal device to send the instruction information.
  • the first resource indicated by the first configuration information sent by the network device to the terminal device may be a resource for the terminal device reporting layer to receive power (layer1-reference signal receiving power, L1-RSRP), that is, the terminal device can recover It is used to report L1-RSRP resources in the process of activating the secondary cell.
  • L1-RSRP layer1-reference signal receiving power
  • the first resource indicated by the first configuration information sent by the network device to the terminal device may also be an SR resource or a PRACH resource, etc., which can avoid the overhead caused by the network device needing to configure the terminal device with a resource dedicated to sending instruction information .
  • the indication information sent by the terminal device may indicate the information of the transmission beam recommended for the network device to use, for example, the information of the transmission beam may be the index of the transmission beam.
  • the network device In response to the instruction information, the network device sends an RS to the terminal device through the secondary cell, and the terminal device receives the RS sent by the network device through the secondary cell.
  • the RS in the embodiment of the present application may be referred to as a temporary RS or an additional RS, that is, the RS sent by the network device to the terminal device to assist the terminal device in completing the rapid secondary cell activation, for example, a short period (short interval periodic) RS or aperiodic (aperiodic) RS, etc.
  • This temporary RS has a shorter period or better timeliness than the regular RS sent by the network equipment on the secondary cell (such as the SSB with a transmission period of 20ms) (for example, it is sent when the terminal device needs it to avoid waiting for the periodic RS. ⁇ ), which can reduce the delay of activating the secondary cell.
  • the RS may include an SSB or a tracking reference signal (tracking reference signal, TRS).
  • TRS tracking reference signal
  • whether the RS includes the SSB or the TRS may be stipulated by the agreement, or may be pre-configured in the embodiment of the present application, which is not limited.
  • the terminal device can perform operations that need to be completed in the activation process such as automatic gain control (AGC) and fine synchronization according to the SSB or TRS sent by the network device.
  • AGC automatic gain control
  • fine synchronization are steps in the process of activating the cell.
  • the RS may also include CSI-RS, and the terminal device measures channel state information (channel state information, CSI) according to the CSI-RS; the terminal device sends the CSI to the network device.
  • the terminal equipment measuring CSI based on the CSI-RS is also a step in the cell activation process. When the terminal equipment sends the CSI to the network equipment, it indicates that the cell activation is completed.
  • the network device may send an RS to the network device in response to the instruction information, that is, the instruction information at this time is used to trigger the network device to send the RS.
  • the instruction information may also instruct the network device to send the SSB corresponding to the beam.
  • Index the number of SSB index is one.
  • One transmission beam corresponds to one SSB index, and one transmission beam can transmit SSB or TRS or CSI-RS.
  • the terminal device only reports one SSB index.
  • the network device sends the RS on the secondary cell in response to the indication information, it can use the transmission beam corresponding to the SSB index to send the RS to the terminal device.
  • the terminal device does not need the network device to instruct the terminal device through additional beam instruction information (the beam instruction information is used to instruct the network device to send data or RS to the terminal device when using the transmission beam, for example, the transmission instruction information may be TCI).
  • the transmission instruction information may be TCI.
  • Its own transmission beam can enable the terminal device to know the transmission beam of the sending RS, so that the terminal device can determine the reception beam of the receiving RS according to the transmission beam of the network device, and after the terminal device determines the reception beam of the SSB corresponding to the SSB index, the terminal The device can use the receiving beam to receive the RS sent by the network device through the sending beam corresponding to the SSB index, that is, the terminal device expects that the RS is the SSB index indicated by the indication information.
  • the SSB corresponding to the SSB is QCL, which can avoid the sending beam indication information sent by the network device. Incoming overhead and activation delay due to signaling interaction.
  • S320 includes: the network device sends the SSB corresponding to the SSB index to the terminal device through the secondary cell, and the terminal device receives the SSB corresponding to the SSB index sent by the network device through the secondary cell, so that the network device sends
  • the terminal device only sends the SSB corresponding to the SSB index reported by the terminal device, and does not send the SSB corresponding to other SSB indexes.
  • the terminal device can learn that the SSB sent by the network device is the SSB corresponding to the SSB index reported by itself, which can avoid the need to activate the terminal device.
  • the secondary cell network device needs to additionally send all the overheads caused by the SSB to the terminal device.
  • the RS sent by the network device may be sent periodically or non-periodically.
  • the method further includes: the network device sends second configuration information to the terminal device, and the terminal device receives the second configuration information sent by the network device.
  • the second configuration information is used to indicate the period and/or the number of times the network device sends the RS.
  • S320 includes: in response to the indication information, the network device sends the RS to the terminal device through the secondary cell according to the period and/or the number of times indicated by the second configuration information, The terminal device receives the RS sent by the network device through the secondary cell according to the period and/or the number of times indicated by the second configuration information.
  • the second configuration information may only indicate the period during which the network device sends the RS, or only the number of times the network device sends the RS, or may indicate the period and the number of times the network device sends the RS.
  • the second configuration information may also indicate the starting time-frequency position of the RS, etc., which is not limited in the embodiment of the present application.
  • the RS includes SSB
  • the period at which the network device sends the SSB indicated by the second configuration information is the first period, and/or the number of times is the first number
  • the RS includes TRS
  • the period for the network device to send TRS indicated by the second configuration information is the second period, and/or the number of times is the second
  • the RS includes CSI-RS
  • the period for the network device to send CSI-RS indicated by the second configuration information Is the third cycle, and/or, the number is the third number.
  • the first period, the second period, and the third period may be equal or unequal, which is not limited in the embodiment of the present application.
  • the first number, the second number, and the third number may be equal or unequal, which is not limited in the embodiment of the present application.
  • the terminal device activates the secondary cell according to the RS.
  • the activation of the secondary cell mentioned in the embodiment of this application may include one or more of the following steps:
  • Step 1 The terminal device receives the activation command sent by the network device
  • Step 2 The terminal device detects the unknown secondary cell according to the activation command (based on SSB detection);
  • Step 3 If the terminal device detects the secondary cell, it will perform AGC (AGC based on SSB);
  • Step 4 The terminal device reports the L1-RSRP and the information of the network device transmission beam (based on SSB or CSI-RS reporting) to the network device on the layer 1 resource;
  • Step 5 The terminal device receives a transmission configuration indicator (TCI) sent by the network device, where the TCI includes the transmission beam information of the network device determined by the network device;
  • TCI transmission configuration indicator
  • Step 6 The terminal equipment and the network equipment perform fine synchronization (based on SSB fine synchronization);
  • Step 7 The terminal device measures the CSI based on the CSI-RS, and reports the measured CSI to the network device.
  • the terminal device can perform the above step 3, step 4, step 5, and step 6 according to the SSB or TRS, that is, the above step 3, step 4, step 5, and step 6 can be Implementation based on SSB or TRS; if the RS includes CSI-RS, the terminal device can perform the above step 7 according to the CSI-RS.
  • the terminal device in the scenario of activating an unknown secondary cell, after the terminal device detects the secondary cell, the terminal device can send instruction information to the network device, and the network device responds to the instruction information by sending an RS to the terminal device, and the terminal device can Activating the secondary cell based on the RS can avoid the time delay caused by the need to wait for the RS with a relatively long period, thereby helping to reduce the time delay of activating the secondary cell. That is, in this application, the RS sent by the network device to the terminal device is triggered based on the indication information sent by the terminal device, which prevents the terminal device from needing to wait for an RS with a relatively long period to activate the secondary cell, thereby reducing the time delay for activating the secondary cell.
  • the terminal device can send the indication information to the network device at the first sending opportunity after detecting the preset time of the secondary cell. In this way, the delay for the network device to send the RS can be further reduced, which is beneficial to reducing the delay for activating the secondary cell. .
  • the terminal device may send the instruction information to the network device on the dedicated first resource indicated by the first configuration information, or may send the instruction information to the network device on the L1-RSRP resource and/or the resource reporting the information of the network device sending beam, Conducive to saving resource overhead.
  • the indication information can also indicate an SSB index corresponding to the transmission beam of the network device, that is, a transmission beam corresponding to the one SSB index of the network device only transmits SSB or TRS, and the network device does not transmit other SSBs, so signaling can be saved. Overhead.
  • the terminal device expects that the RS sent by the network device is the SSB or TRS corresponding to the transmission beam, so the reception efficiency can be improved.
  • the network device sends first configuration information to the terminal device, and the terminal device receives the first configuration information, where the first configuration information is used to instruct the terminal device to send the first resource of the instruction information.
  • S520 The network device sends second configuration information to the terminal device, and the terminal device receives the second configuration information, where the second configuration information is used to indicate the period and/or number of times the network device sends the RS.
  • S510 can be performed before or after S520 or at the same time.
  • the network device sends an activation command to the terminal device, and the terminal device receives the activation command sent by the network device.
  • the activation command is used to instruct the terminal device to activate the secondary cell.
  • the terminal device After the terminal device receives the activation command, it is based on the SSB sent by the network device (the SSB is the SSB sent by the existing network device to a certain cell, that is, the SSB is a cell-level SSB and is not sent for a specific terminal device. ) Detect the secondary cell. If the terminal device detects the secondary cell, the terminal device determines the best transmission beam of the network device according to the detection result, and the terminal device determines its own receiving beam corresponding to the best transmission beam of the network device.
  • the terminal device needs to detect the secondary cell within a preset time, and the terminal device needs to send the instruction information to the network device on the first resource at the first sending opportunity after the preset time of detecting the secondary cell.
  • the indication information is used to trigger the network device to send the RS to the terminal device.
  • the first resource may be a dedicated resource.
  • the dedicated resource may be a random access channel (RACH) or a scheduling request (SR) resource.
  • the terminal device may send the instruction information to the network device on the first resource after step 2 of the process of activating the secondary cell described in the method 300 and before step 4.
  • the first resource may be an L1-RSRP resource and/or a resource for reporting the information of the transmission beam of the network device.
  • the terminal device may report the L1-RSRP resource and/or the resource of the network device.
  • the LS-RSRP, the information and instruction information of the transmission beam of the network device are reported to the network device on the resource of the information of the transmission beam. That is, in step 4 of the process of activating the secondary cell described in the method 300, the instruction information may be sent to the network device.
  • the network device After receiving the instruction information sent by the terminal device, the network device sends an RS to the terminal device, and the terminal device receives the RS.
  • the RS includes at least one of SSB, TRS or CSI-RS.
  • which reference signal among SSB, CSI-RS, and TRS sent by the network device to the terminal device may be preset or configured by the network device, which is not limited in the embodiment of the present application.
  • the network device may send the RS to the terminal device according to the configuration period and/or the number of times of the second configuration information.
  • the indication information may also include an SSB index corresponding to a transmission beam of the network device.
  • the network device sends the RS on the secondary cell in response to the indication information, it may use the corresponding SSB index.
  • the transmit beam sends the RS to the terminal device.
  • the terminal device does not need the network device to send additional beam instruction information (the sending beam instruction information is used to instruct the network device to send data or RS to the terminal device when using the sending beam, for example, the sending beam instruction information may be TCI) to the terminal device Instructing its own transmission beam can enable the terminal device to know the transmission beam for transmitting the RS.
  • S570 The terminal device activates the secondary cell detected in S540 according to the RS.
  • S570 may specifically include one or more of step 3, step 6, step 5, step 6, and step 7 of activating the secondary cell in the method 300.
  • FIG. 6 shows an apparatus 600 for activating a secondary cell provided by an embodiment of the present application, and the apparatus 600 includes:
  • the transceiver module 610 is configured to send indication information to the network device after the secondary cell is detected;
  • the transceiver module 610 is further configured to receive the RS sent by the network device through the secondary cell, where the RS is sent by the network device in response to the indication information;
  • the activation module 620 is configured to activate the secondary cell according to the RS.
  • the transceiver module 610 is specifically configured to:
  • the instruction information is sent to the network device at the first sending opportunity after the secondary cell is detected, and the first sending opportunity after the secondary cell is detected is no later than the first after the time threshold for detecting the secondary cell Timing of sending.
  • the transceiver module 610 is further configured to: receive first configuration information sent by the network device, where the first configuration information is used to indicate a first resource for sending the indication information;
  • the transceiver module 610 is configured to send instruction information to a network device, including: the transceiver module 610 is configured to send the instruction information to the network device on the first resource indicated by the first configuration information.
  • the first resource indicated by the first configuration information is a resource for reporting layer 1 reference signal received power L1-RSRP.
  • the indication information is used to indicate the synchronization signal/physical broadcast channel block SSB index corresponding to the transmission beam recommended for the network device to use, and the number of the SSB index is one.
  • the device 600 expects that the SSB corresponding to the RS and the SSB index indicated by the indication information is a quasi-co-located QCL.
  • the RS includes SSB
  • the transceiver module is configured to receive the RS sent by a network device, including:
  • the transceiver module receives the SSB corresponding to the SSB index indicated by the indication information sent by the network device.
  • the RS includes a tracking reference signal TRS.
  • the RS includes channel state information CSI-reference signal RS.
  • the transceiver module 610 is further configured to: receive second configuration information sent by the network device, where the second configuration information is used to indicate the period and/or number of times the network device sends the RS;
  • the transceiver module 610 is configured to receive the RS sent by the network device through the secondary cell, and includes: the transceiver module 610 receives the network according to the period and/or the number of times indicated by the second configuration information The RS sent by the device through the secondary cell.
  • the activation module 620 in the embodiment of the present application may be implemented by a processor or a processor-related circuit component
  • the transceiver module 610 may be implemented by a transceiver or a transceiver-related circuit component.
  • an embodiment of the present application also provides an apparatus 700 for activating a secondary cell.
  • the apparatus 700 includes a processor 710, a memory 720, and a transceiver 730.
  • the memory 720 stores instructions or programs, and the processor 710 is used to execute instructions or programs stored in the memory 720.
  • the processor 710 is configured to execute the operations performed by the activation module 620 in the foregoing embodiment
  • the transceiver 730 is configured to execute the operations performed by the transceiver module 610 in the foregoing embodiment.
  • the apparatus 600 or the apparatus 700 according to the embodiment of the present application may correspond to the terminal equipment in the method 300 and the method 500 for activating a secondary cell in the embodiment of the present application, and the operation of each module in the apparatus 600 or the apparatus 700
  • the and/or functions are used to implement the corresponding procedures of the respective methods in FIG. 3 and FIG. 5 respectively. For the sake of brevity, details are not repeated here.
  • FIG. 8 shows an apparatus 800 for activating a secondary cell provided by an embodiment of the present application, and the apparatus 800 includes:
  • the receiving module 810 is configured to receive the instruction information sent by the terminal device
  • the sending module 820 is configured to send a reference signal RS to the terminal device through a secondary cell in response to the indication information.
  • the sending module 820 is further configured to:
  • the receiving module 810 is configured to receive the instruction information sent by the terminal device, including:
  • the receiving module 810 receives the indication information sent by the terminal device on the first resource.
  • the first resource indicated by the first configuration information is a resource for the terminal device to report the layer 1 reference signal received power L1-RSRP.
  • the indication information is used to indicate the synchronization signal/physical broadcast channel block SSB index corresponding to the transmission beam suggested to be used by the apparatus, and the number of the SSB index is one.
  • the device ensures that the SSB corresponding to the RS and the SSB index indicated by the indication information is a quasi-co-located QCL.
  • the RS includes an SSB
  • the sending module is configured to send the RS to the terminal device through a secondary cell in response to the indication information, including:
  • the sending module 820 is configured to send the SSB corresponding to the SSB index indicated by the indication information to the terminal device through the secondary cell in response to the indication information.
  • the RS includes a tracking reference signal TRS.
  • the RS further includes channel state information CSI-reference signal RS.
  • the sending module 820 is further configured to include:
  • the sending module 820 is configured to send an RS to the terminal device through a secondary cell in response to the indication information, including:
  • the sending module 820 is configured to send the RS to the terminal device through the secondary cell according to the period and/or times indicated by the second configuration information in response to the indication information.
  • receiving module 810 and the sending module 820 in the embodiment of the present application may be implemented by a transceiver or transceiver-related circuit components.
  • an embodiment of the present application also provides an apparatus 900 for activating a secondary cell.
  • the apparatus 900 includes a processor 910, a memory 920, and a transceiver 930.
  • the memory 920 stores instructions or programs
  • the processor 910 is used to execute instructions or programs stored in the memory 920.
  • the transceiver 930 is used to execute the operations performed by the receiving module 810 and the sending module 820 in the foregoing embodiment.
  • the apparatus 800 or the apparatus 900 may correspond to the network equipment in the method 300 and the method 500 for activating a secondary cell in the embodiment of the present application, and the operation of each module in the apparatus 800 or the apparatus 900
  • the and/or functions are used to implement the corresponding procedures of the respective methods in FIG. 3 and FIG. 5 respectively. For the sake of brevity, details are not repeated here.
  • FIG. 10 shows a simplified schematic diagram of the structure of the terminal device. It is easy to understand and easy to illustrate.
  • the terminal device uses a mobile phone as an example.
  • the terminal equipment includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device.
  • the processor is mainly used to process the communication protocol and communication data, and to control the terminal device, execute the software program, and process the data of the software program.
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of baseband signal and radio frequency signal and the processing of radio frequency signal.
  • the antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal devices may not have input and output devices.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.
  • FIG. 10 only one memory and processor are shown in FIG. 10. In an actual terminal device product, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium or storage device.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.
  • the antenna and radio frequency circuit with the transceiving function can be regarded as the transceiving unit of the terminal device
  • the processor with the processing function can be regarded as the processing unit of the terminal device.
  • the terminal device includes a transceiver unit 1010 and a processing unit 1020.
  • the transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, and so on.
  • the processing unit may also be called a processor, a processing board, a processing module, a processing device, and so on.
  • the device for implementing the receiving function in the transceiver unit 1010 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver unit 1010 as the sending unit, that is, the transceiver unit 1010 includes a receiving unit and a sending unit.
  • the transceiver unit may sometimes be called a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may sometimes be called a receiver, a receiver, or a receiving circuit.
  • the transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.
  • transceiving unit 1010 is used to perform the sending and receiving operations on the terminal device side in the foregoing method embodiment, and the processing unit 1020 is used to perform other operations on the terminal device in the foregoing method embodiment except for the transceiving operation.
  • the transceiving unit 1010 is used to perform the sending operation on the terminal device side in S310 of FIG. 3 or the receiving operation on the terminal device side in S320, and/or the transceiving unit 1020 is also used to perform the Other receiving and sending steps on the terminal device side.
  • the processing unit 1020 is configured to execute S330 in FIG. 3, and/or the processing unit 1020 is also configured to execute other processing steps on the terminal device side in the embodiment of the present application.
  • the transceiver unit 1010 is configured to perform the receiving operation on the terminal device side in S510, S520, S530, and S560 in FIG. 5 or the sending operation on the terminal device side in S550, and/or the transceiver unit 1010 It is also used to perform other transceiving steps on the terminal device side in the embodiment of the present application.
  • the chip device may include a transceiver unit and a processing unit.
  • the transceiver unit may be an input/output circuit and/or a communication interface;
  • the processing unit is a processor, microprocessor, or integrated circuit integrated on the chip.
  • the device shown in FIG. 11 can be referred to.
  • the device can perform functions similar to the processor 710 in FIG. 7.
  • the device includes a processor 1110, a data sending processor 1120, and a data receiving processor 1130.
  • the activation module 620 in the foregoing embodiment may be the processor 1110 in FIG. 11, and completes corresponding functions.
  • the transceiver module 610 in the foregoing embodiment may be the data sending processor 1120 and/or the data receiving processor 1130 in FIG. 11.
  • the channel encoder and the channel decoder are shown in FIG. 11, it can be understood that these modules do not constitute a restrictive description of this embodiment, and are only illustrative.
  • FIG. 12 shows another form of an embodiment of the present application.
  • the processing device 1200 includes modules such as a modulation subsystem, a central processing subsystem, and a peripheral subsystem.
  • the device for activating the secondary cell in this embodiment can be used as the modulation subsystem therein.
  • the modulation subsystem may include a processor 1203 and an interface 1204.
  • the processor 1203 completes the function of the aforementioned activation module 620
  • the interface 1204 completes the aforementioned function of the transceiver module 610.
  • the modulation subsystem includes a memory 1206, a processor 1203, and a program stored in the memory 1206 and running on the processor. When the processor 1203 executes the program, the terminal device side in the above method embodiment is implemented. Methods.
  • the memory 1206 can be non-volatile or volatile, and its location can be located inside the modulation subsystem or in the processing device 1200, as long as the memory 1206 can be connected to the The processor 1203 is sufficient.
  • a computer-readable storage medium is provided, and an instruction is stored thereon.
  • the instruction is executed, the method on the terminal device side in the foregoing method embodiment is executed.
  • a computer program product containing instructions is provided, and when the instructions are executed, the method on the terminal device side in the foregoing method embodiment is executed.
  • the device 1300 includes one or more radio frequency units, such as a remote radio unit (RRU) 1310 and one or more basebands.
  • a unit (baseband unit, BBU) also referred to as a digital unit, digital unit, DU) 1320.
  • BBU baseband unit
  • the RRU 1310 may be called a transceiver module, which corresponds to the receiving module 810 and the sending module 820 in FIG. 8.
  • the transceiver module may also be called a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least An antenna 1311 and radio frequency unit 1312.
  • the RRU 1310 part is mainly used for receiving and sending radio frequency signals and converting radio frequency signals and baseband signals, for example, for sending RS to terminal equipment.
  • the 1310 part of the BBU is mainly used to perform baseband processing, control the base station, and so on.
  • the RRU 1310 and the BBU 1320 may be physically set together, or may be physically separated, that is, a distributed base station.
  • the BBU 1320 is the control center of the base station, and can also be called a processing module, which is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, and spreading.
  • the BBU processing module
  • the BBU may be used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment, for example, to generate the foregoing RS.
  • the BBU 1320 may be composed of one or more single boards, and multiple single boards may jointly support a wireless access network (such as an LTE network) with a single access standard, or can support different access standards. Wireless access network (such as LTE network, 5G network or other networks).
  • the BBU 1320 also includes a memory 1321 and a processor 1322.
  • the memory 1321 is used to store necessary instructions and data.
  • the processor 1322 is used to control the base station to perform necessary actions, for example, used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment.
  • the memory 1321 and the processor 1322 may serve one or more single boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.
  • processors mentioned in the embodiments of this application may be a central processing unit (central processing unit, CPU), or other general-purpose processors, digital signal processors (digital signal processors, DSP), and application-specific integrated circuits ( application specific integrated circuit (ASIC), ready-made programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
  • CPU central processing unit
  • DSP digital signal processors
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • dynamic RAM dynamic RAM
  • DRAM dynamic random access memory
  • synchronous dynamic random access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory serial DRAM, SLDRAM
  • direct rambus RAM direct rambus RAM, DR RAM
  • the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component
  • the memory storage module
  • the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disks or optical disks and other media that can store program codes. .

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Abstract

本申请提供了一种通信方法和装置，可以激活辅小区。若激活的小区为未知的辅小区，则在终端设备检测到辅小区之后，终端设备可以向网络设备发送指示信息，该指示信息用于触发网络设备发送的RS，这样，网络设备再收到指示信息之后就可以向终端设备发送RS，这样，可以避免终端设备等待网络设备发送周期较长的参考信号，这样可以降低激活辅小区的时延。

Description

用于激活辅小区的通信方法和装置 技术领域
本申请涉及通信领域，并且更具体地，涉及通信领域中用于激活辅小区的通信方法和装置。
背景技术
终端设备可以同时使用多个小区进行上下行通信，从而支持高速数据传输。其中，该多个小区中的一个小区为主小区(primary cell，PCell)，其他小区为辅小区(secondary cell，SCell)。这样，多个小区可以实现载波聚合(carrier aggregation，CA)。在CA的过程中，终端设备需要激活辅小区，需要激活的小区分为已知辅小区和未知辅小区。终端设备激活小区的过程依赖于网络设备发送的参考信号(reference signal，RS)，由于网络设备发送RS的周期比较长(例如，RS为同步信号/物理广播信道块(synchronization signal/physical broadcast channel，SSB)时，通常设置SSB的周期大于等于20毫秒)，导致终端设备激活的辅小区的时延较大，从而导致终端设备不能及时使用辅小区的带宽资源，使得用户体验较差。
发明内容
本申请提供一种用于激活辅小区的通信方法和装置，可以降低激活辅小区的时延，从而有助于提高终端设备使用辅小区带宽资源的时效性，有利于提高用户体验。
第一方面，提供了一种用于激活辅小区的通信方法，包括：在检测到辅小区之后，终端设备向网络设备发送指示信息，所述终端设备接收所述网络设备发送的RS，所述RS是所述网络设备响应于所述指示信息发送的，所述终端设备根据所述RS激活所述辅小区。
在本申请实施例中，若激活的小区为未知的辅小区，终端设备需要首先对辅小区进行检测，以获得辅小区的粗定时信息，终端设备完成辅小区检测的时间不是固定的，而是根据终端设备的实现以及信道状况等条件决定的。终端设备可以基于SSB进行辅小区检测，在辅小区检测完成后才可以接收网络设备通过该辅小区发送的其它参考信号。因此，若激活的小区为未知的辅小区，网络设备不知道何时向终端设备发送RS，若网络设备过早的向终端设备发送RS，此时终端设备还没有检测到辅小区，则导致浪费参考信号的开销，若网络设备过晚的向终端设备RS，则会导致终端设备激活辅小区的时延增加。因此，若激活的小区为未知的辅小区，则在终端设备检测到辅小区之后，终端设备可以向网络设备发送指示信息，该指示信息用于触发网络设备通过辅小区发送RS，这样，网络设备在收到指示信息之后就可以向终端设备发送RS，这样，可以避免终端设备等待网络设备发送周期较长的参考信号，有助于降低激活辅小区的时延，终端设备能快速使用辅小区的带宽资源，有利于提高用户体验。
可选地，所述终端设备通过主小区向所述网络设备发送指示信息。
可选地，所述终端设备向所述网络设备发送的指示信息可以携带所述辅小区的标识。
结合第一方面，在第一方面的一种可能的实现方式中，所述终端设备向网络设备发送指示信息，包括：所述终端设备在检测到辅小区后的第一个发送时机向所述网络设备发送所述指示信息，所述检测到辅小区后的第一个发送时机不晚于检测辅小区的时间阈值后的第一个发送时机。终端设备完成辅小区检测的时间不是固定的，而是根据终端设备的实现以及信道状况等条件决定的，因此每个终端设备检测到辅小区的时间不同，每个终端设备需要在检测到辅小区后的第一个发送时机向网络设备发送指示信息，发送指示信息的第一个发送时机不会晚于网络设备为终端设备配置的检测辅小区的时间阈值(时间阈值是网络设备为终端设备配置的通用的检测辅小区的时间门限，超过该时间门限之后则不能再检测辅小区，每个终端设备可以在小于该时间门限的时间区间内检测辅小区)后的第一个发送时机。即本申请实施例的方案涉及两个第一个发送时机，其中检测到辅小区后的第一个发送时机是在检测辅小区的时间阈值后的第一个发送时机之前，最晚也不超过检测辅小区的时间阈值后的第一个发送时机。这样，可以避免终端设备在检测到辅小区后一直不发送指示信息，使得可以快速完成辅小区检测的终端设备及早发送指示信息，保证网络设备快速检测到指示信息，从而触发网络设备发送RS，有助于降低发送RS的时延。
结合第一方面，在第一方面的一种可能的实现方式中，所述方法还包括：所述终端设备接收所述网络设备发送的第一配置信息，所述第一配置信息用于指示发送所述指示信息的第一资源；其中，所述终端设备向网络设备发送指示信息，包括：在所述第一配置信息指示的所述第一资源上向所述网络设备发送所述指示信息。
由于终端设备需要发送物理层信息的资源，因此网络设备需要配置终端设备发送所述指示信息的物理层资源。这样，终端设备就可以在第一资源上向网络设备发送指示信息，从而能够避免终端设备无法发送指示信息或网络设备不知道终端设备在哪个物理层资源上发送指示信息，导致发送指示信息失败的情况。该第一资源可以为主小区或者辅小区上的物理层资源。该第一资源可以为调度请求(scheduling request，SR)资源或物理随机接入信道(physical random access channel，PRACH)资源或新的物理层资源。这样有利于区分终端设备发送指示信息的资源与终端设备上报L1-RSRP的资源。
结合第一方面，在第一方面的一种可能的实现方式中，所述第一配置信息指示的所述第一资源为所述终端设备上报层1参考信号接收功率L1-RSRP的资源。
因此，终端设备可以复用终端设备为辅小区上报L1-RSRP的资源，这样，发送指示信息就不需要利用占用额外的资源，从而可以节省资源开销，同时也能避免网络设备需要给终端设备配置专用于发送指示信息的资源所带来的开销。
结合第一方面，在第一方面的一种可能的实现方式中，所述指示信息用于指示所述网络设备的发送波束对应的同步信号/物理广播信道块SSB索引，所述SSB索引的数量为一个。
这样，终端设备只上报一个SSB索引，网络设备响应于指示信息在辅小区上发送RS时，可以利用该SSB索引所对应的发送波束向终端设备发送RS。这样，终端设备不需要网络设备通过额外的发送波束指示信息(发送波束指示信息用于指示网络设备向终端设备发送数据或RS时采用的发送波束，例如发送波束指示信息可以为传输配置指示信息(transmission configuration indicator，TCI))向终端设备指示自身的发送波束就可以使得 终端设备获知发送RS的发送波束(或QCL信息)。
结合第一方面，在第一方面的一种可能的实现方式中，所述终端设备期待所述RS与所述指示信息指示的所述SSB索引对应的SSB是准共址QCL的。
换句话说，指示信息用于指示网络设备发送波束对应的SSB索引，终端设备在小区检测的过程中确定了针对该SSB索引对应的SSB的接收波束，终端设备可以通过该接收波束接收网络设备通过SSB索引对应的发送波束发送的RS，这样，避免了终端设备通过接收网络设备的发送波束指示信息来确定所述RS的接收波束，减少了激活辅小区过程中的信令交互，从而降低了辅小区激活时延。。
结合第一方面，在第一方面的一种可能的实现方式中，所述RS包括SSB，所述终端设备接收网络设备发送的所述RS，包括：所述终端设备接收所述网络设备发送的SSB索引对应的所述SSB。即终端设备可以获知网络设备所发送的SSB为自身上报的SSB索引对应的SSB。网络设备向终端设备仅发送终端设备上报的SSB索引对应的SSB，可以避免为了使得终端设备激活辅小区网络设备需要向终端设备额外发送所有的SSB所带来的开销。
结合第一方面，在第一方面的一种可能的实现方式中，所述RS包括跟踪参考信号TRS。这样，终端设备可以利用TRS激活辅小区。
结合第一方面，在第一方面的一种可能的实现方式中，所述RS包括信道状态信息CSI-参考信号RS。这样，终端设备可以利用CSI-RS测量CSI，并向网络设备上报CSI，当终端设备向网络设备上报CSI之后，网络设备就可以获知终端设备激活辅小区结束，网络设备可以停止发送用于激活辅小区的RS，从而可以节省信令开销。
结合第一方面，在第一方面的一种可能的实现方式中，所述方法还包括：所述终端设备接收所述网络设备发送的第二配置信息，所述第二配置信息用于指示所述网络设备发送所述RS的周期和/或次数；其中，所述终端设备接收网络设备通过所述辅小区发送的所述RS，包括：所述终端设备根据所述第二配置信息指示的所述周期和/或所述次数接收所述网络设备通过所述辅小区发送的所述RS。
由于终端设备在激活过程中可能需要多次接收上述RS完成激活，终端设备需要获知每次上述RS出现的时域位置，这样，终端设备就可以按照第二配置信息所指示的周期和/或次数接收网络设备发送的RS，能够有效的避免终端设备无法接收周期性或半静态发送的上述RS。
第二方面，提供了一种用于激活辅小区的通信方法，包括：网络设备接收终端设备发送的指示信息；所述网络设备响应于所述指示信息通过辅小区向所述终端设备发送参考信号RS。
在本申请实施例中，若激活的小区为未知的辅小区，终端设备需要首先对辅小区进行检测，以获得辅小区的粗定时信息，终端设备完成辅小区检测的时间不是固定的，而是根据终端设备的实现以及信道状态等条件等决定的。终端设备可以基于SSB进行辅小区检测，在辅小区检测完成后才可以接收网络设备通过辅小区发送的其他参考信号。因此，若激活的小区为未知的辅小区，网络设备不知道何时向终端设备发送RS，若网络设备过早的向终端设备发送RS，此时终端设备还没有检测到辅小区，则导致浪费参考信号的开销，若网络设备过晚的向终端设备RS，则会导致终端设备激活辅小区的时延增加。因此，若 激活的小区为未知的辅小区，网络设备可以接收终端设备发送的指示信息，该指示信息用于触发网络设备发送的RS，这样，网络设备在收到指示信息之后就可以向终端设备发送RS，这样，可以避免终端设备等待网络设备发送周期较长的参考信号，有助于降低激活辅小区的时延，终端设备能快速使用辅小区的带宽资源，有利于提高用户体验。
可选地，所述指示信息为所述终端设备检测到辅小区之后向网络设备发送的。
结合第二方面，在第二方面的一种可能的实现方式中，所述方法还包括：所述网络设备向所述终端设备发送第一配置信息，所述第一配置信息用于指示所述终端设备发送所述指示信息的第一资源；其中，所述网络设备接收终端设备发送的指示信息，包括：所述网络设备在所述第一资源上接收所述终端设备发送的指示信息。
由于终端设备需要发送物理层信息的资源，因此，网络设备需要配置终端设备发送指示信息的物理层资源。这样，网络设备就可以在第一资源上接收终端设备发送的指示信息，从而能够避免网络设备不知终端设备在哪些物理层资源上发送指示信息，网络设备在哪些资源上接收指示信息时导致发送指示信息失败的情况。该第一资源可以为主小区或者辅小区上的物理层资源。例如，该第一资源为SR资源或者PRACH资源或者新的物理资源，这样有利于区分终端设备发送指示信息的资源和终端设备上报LS-RSRP的资源。
结合第二方面，在第二方面的一种可能的实现方式中，所述第一配置信息指示的所述第一资源为所述终端设备上报层1参考信号接收功率L1-RSRP的资源。
因此，终端设备可以复用终端设备为辅小区上报L1-RSRP的资源，这样，可以发送指示信息就不需要利用占用额外的资源，从而可以节省资源开销，同时也能避免网络设备需要给终端设备配置专用于发送指示信息的资源所带来的开销。
结合第二方面，在第二方面的一种可能的实现方式中，所述指示信息用于指示网络设备的发送波束对应的同步信号/物理广播信道块SSB索引，所述SSB索引的数量为一个。
这样，网络设备响应于指示信息在辅小区上发送RS时，可以利用该SSB索引所对应的发送波束向网络设备发送RS。这样，终端设备不需要网络设备通过额外的发送波束指示信息(发送波束指示信息用于指示网络设备向终端设备发送数据或RS时采用的发送波束，例如发送波束指示信息可以是TCI)向终端设备指示自身的发送波束就可以使得终端设备获知发送RS的发送波束(或QCL信息)。
结合第二方面，在第二方面的一种可能的实现方式中，所述网络设备确保所述RS与所述指示信息指示的SSB索引对应的SSB是准共址QCL的。
换句话说，指示信息用于指示网络设备发送波束对应的SSB索引，终端设备在小区检测的过程中确定了针对该SSB索引对应的SSB的接收波束，终端设备可以通过该接收波束接收网络设备通过SSB索引对应的发送波束发送的RS，这样，避免了终端设备通过接收网络设备的发送波束指示信息来确定所述RS的接收波束，减少了激活辅小区过程中的信令交互，从而降低了辅小区激活时延。。
结合第二方面，在第二方面的一种可能的实现方式中，所述RS包括SSB，所述网络设备响应于所述指示信息，通过辅小区向所述终端设备发送RS，包括：所述网络设备响应于所述指示信息，通过所述辅小区向所述终端设备发送所述指示信息指示的SSB索引对应的SSB。即终端设备可以获知网络设备所发送的SSB为自身上报的SSB索引对应的SSB。网络设备向终端设备仅发送终端设备上报的SSB索引对应的SSB，可以避免网络设 备为该终端设备的辅小区激活额外发送所有的SSB所带来的参考信号开销。
结合第二方面，在第二方面的一种可能的实现方式中，所述RS包括跟踪参考信号TRS。这样，终端设备可以利用TRS激活辅小区。这样，终端设备可以利用CSI-RS测量CSI，并向网络设备上报CSI，当终端设备向网络设备上报CSI之后，网络设备就可以获知终端设备激活辅小区结束，网络设备可以停止发送用于激活辅小区的RS，从而可以节省信令开销。
结合第二方面，在第二方面的一种可能的实现方式中，所述RS还包括信道状态信息CSI-参考信号RS。
结合第二方面，在第二方面的一种可能的实现方式中，所述方法还包括：所述网络设备向所述终端设备发送第二配置信息，所述第二配置信息用于指示发送所述RS的周期和/或次数；其中，所述网络设备响应于所述指示信息，通过辅小区向所述终端设备发送RS，包括：所述网络设备响应于所述指示信息，根据所述第二配置信息指示的周期和/或次数通过所述辅小区向所述终端设备发送所述RS。
由于终端设备在激活过程中可能需要多次接收上述RS完成激活，终端设备需要获知每次上述RS出现的时域位置，这样，网络设备就可以按照第二配置信息所指示的周期和/或次数向终端设备发送的RS，终端设备按照第二配置信息所指示的周期和/或次数接收网络设备发送的RS，能够有效的避免终端设备无法接收周期性或半静态发送的上述RS。
第三方面，提供一种用于激活辅小区的装置，所述装置用于执行上述第一方面或第一方面的任一可能的实现方式中的方法。具体地，所述装置可以包括用于执行第一方面或第一方面的任一可能的实现方式中的方法的模块。
第四方面，提供一种用于激活辅小区的装置，所述装置用于执行上述第二方面或第二方面的任一可能的实现方式中的方法。具体地，所述装置可以包括用于执行第二方面或第二方面的任一可能的实现方式中的方法的模块。
第五方面，提供一种用于激活辅小区的装置，所述装置包括存储器和处理器，所述存储器用于存储指令，所述处理器用于执行所述存储器存储的指令，并且对所述存储器中存储的指令的执行使得所述处理器执行第一方面或第一方面的任一可能的实现方式中的方法。
第六方面，提供一种用于激活辅小区的装置，所述装置包括存储器和处理器，所述存储器用于存储指令，所述处理器用于执行所述存储器存储的指令，并且对所述存储器中存储的指令的执行使得所述处理器执行第二方面或第二方面的任一可能的实现方式中的方法。
第七方面，本申请提供了一种用于激活辅小区的系统，该系统包括上述第三方面提供的装置以及第四方面提供的装置；或者
该系统包括上述第五方面提供的装置以及第六方面提供的装置。
第八方面，本申请提供一种计算机可读存储介质，计算机可读存储介质中存储有计算机指令，当计算机指令在计算机上运行时，使得计算机执行第一方面及其任意可能的设计中的方法。
第九方面，本申请提供一种计算机可读存储介质，计算机可读存储介质中存储有计算机指令，当计算机指令在计算机上运行时，使得计算机执行第二方面及其任意可能的设计 中的方法。
第十方面，本申请提供一种芯片，包括处理器。处理器用于读取并执行存储器中存储的计算机程序，以执行第一方面及其任意可能的实现方式中的方法。
可选地，所述芯片还包括存储器，存储器与处理器通过电路或电线与存储器连接。
进一步可选地，所述芯片还包括通信接口。
第十一方面，本申请提供一种芯片，包括处理器。处理器用于读取并执行存储器中存储的计算机程序，以执行第二方面及其任意可能的实现方式中的方法。
可选地，所述芯片还包括存储器，存储器与处理器通过电路或电线与存储器连接。
进一步可选地，所述芯片还包括通信接口。
第十二方面，本申请提供一种计算机程序产品，所述计算机程序产品包括计算机程序代码，当所述计算机程序代码在计算机上运行时，使得计算机执行第一方面及其任意可能的设计中的方法。
第十三方面，本申请提供一种计算机程序产品，所述计算机程序产品包括计算机程序代码，当所述计算机程序代码在计算机上运行时，使得计算机执行第二方面及其任意可能的实现方式中的方法。
附图说明
图1是本申请实施例提供的通信系统示意图。
图2是本申请实施例提供的应用场景示意图。
图3是本申请实施例提供的用于激活辅小区的通信方法示意图。
图4是出了本申请实施例提供的时间轴示意图。
图5是本申请实施例提供的同于激活辅小区的通信方法另一示意图。
图6是本申请实施例提供的用于激活辅小区的装置示意图。
图7是本申请实施例提供的用于激活辅小区的装置另一示意性框图。
图8是本申请实施例提供的用于激活辅小区的装置再一示意性框图。
图9是本申请实施例提供的于激活辅小区的装置再一用示意性框图。
图10是本申请实施例提供的用于激活辅小区的装置再一示意性框图。
图11是本申请实施例提供的用于激活辅小区的装置再一示意性框图。
图12是本申请实施例提供的用于激活辅小区的装置再一示意性框图。
图13是本申请实施例提供的用于激活辅小区的装置再一示意性框图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通信(global system for mobile communications，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址(wideband code division multiple access，WCDMA)系统、通用分组无线业务(general packet radio service，GPRS)、长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system， UMTS)、第五代(5th generation，5G)系统或新无线(new radio，NR)，以及未来的演进通信系统等。
首先介绍本申请的应用场景，图1是一种适用于本申请的通信系统的示意图。
通信系统包括网络设备和终端设备。终端设备通过电磁波与网络设备进行通信。
在本申请中，终端设备可以为包含无线收发功能、且可以与网络设备配合为用户提供通讯服务的设备。具体地，终端设备可以指用户设备(user equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。例如，终端设备可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，未来5G网络或5G之后的网络中的终端设备等，本申请实施例对此不作限定。
本申请实施例还涉及网络设备。网络设备可以是用于与终端设备进行通信的设备，例如，可以是GSM系统或CDMA中的基站(Base Transceiver Station，BTS)，也可以是WCDMA系统中的基站(NodeB，NB)，还可以是LTE系统中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络或5G之后的网络中的网络侧设备或未来演进的PLMN网络中的网络设备等。
网络设备也可称为无线接入网(radio access network，RAN)设备。RAN设备与终端设备连接，用于接收终端设备的数据并发送给核心网设备。RAN设备在不同通信系统中对应不同的设备，例如，在2G系统中对应基站与基站控制器，在3G系统中对应基站与无线网络控制器(radio ntwork controller，RNC)，在4G系统中对应演进型基站(evolutional node B，eNB)，在5G系统中对应5G系统，如新无线接入系统(new radio access technology，NR)中的接入网设备。图1中的通信系统仅是举例说明，适用本申请的通信系统不限于此，例如，通信系统中包含的网络设备和终端设备的数量还可以是其它的数量。例如，通信系统还可以包括两个以上的终端设备。
图2示出了本申请实施例的应用场景示意图。终端设备可以同时使用多个小区进行上下行通信，从而支持高速数据传输。其中，该多个小区中的一个小区为主小区(primary cell，PCell)，其他小区为辅小区(secondary cell，SCell)，为了简单起见，图2仅以一个辅小区为例描述。图2中的多个小区可以实现CA。CA中允许物理下行控制信道(physical downlink control channel，PDCCH)和物理下行共享信道(physical downlink shared channel，PDSCH)在同一个或者不同的载波分量(carrier component，CC)中，即允许跨载波的调度。其中，CC，带宽部分(bandwidth part，BWP)，CC/BWP，CC和/或BWP通常可等效替换，因为它们都描述的一段频域资源。CC也可以和小区(cell)等效替换。
图2中的PCell是CA的终端设备驻留的小区，CA的终端设备对应物理上行控制信道(physical uplink control channel，PUCCH)信道通常配置在PCell上，用于上报关于PCell和SCell的物理层指示信息，如物理层指示信息包括信道质量指示(channel quality indicator，CQI)，预编码矩阵(precoding matrix indicator，PMI)，混合自动重传请求反馈(hybrid automatic repeat request acknowledge，HARQ-ACK)等。图2中的SCell是指通过 无线资源控制(radio resource control，RRC)连接信令配置给CA的终端设备的小区，工作在辅载波(secondary carrier component，SCC)上，可以为CA终端设备提供更多的无线资源。SCell可以只有下行，也可以上下行同时存在。
需要说明的是，图2中的PCell和SCell可以是图1中的同一个网络设备生成的小区，也可以是不同网络设备生成的小区，本申请实施例对此不作限定。
终端设备需要激活的SCell可能是已知的辅小区也可能为未知的辅小区。通常终端设备可以根据网络设备发送的同步信号/物理广播信道块(synchronization signal/physical broadcast channel，SSB)激活SCell，但是由于SSB的发送周期较长(通常情况下周期大于等于20毫秒)，因此，会导致终端设备激活SCell的时延较长。
为了降低终端设备激活SCell的时延，网络设备可以发送非周期或短周期信道状态信息(channel state information，CSI)-参考信号(reference signal，RS)，终端设备可以利用非周期或短周期的CSI-RS激活SCell。短周期CSI-RS的周期比SSB的周期短，例如，网络设备发送SSB的周期为20毫秒(ms)，CSI-RS的周期为10ms可以降低终端设备激活SCell的时延。或者，网络设备及时向指定终端设备发送RS，可以避免终端设备等待周期性RS的时间。对于需要激活的SCell为已知小区的情况下，网络设备可以在发送激活命令后，或发送激活命令的3ms后发送短周期或非周期CSI-RS。但是对于激活的SCell为未知小区的情况下，终端设备需要首先对辅小区进行检测，以获得辅小区的粗定时信息，终端设备完成辅小区检测的时间不是固定的，而是根据终端设备实现以及信道状况等条件决定的。终端设备可以基于SSB进行辅小区检测，在辅小区检测完成后才可以接收该辅小区上发送的其它参考信号。因此，若激活的辅小区为未知的辅小区，网络设备不知道何时发送CSI-RS，如果网络设备过早的发送CSI-RS，则在终端设备还没有检测到SCell的情况下，导致浪费信令；如果网络设备过晚的发送CSI-RS，则会增加激活SCell的时长。例如，网络设备在t1时刻发送短周期或非周期CSI-RS，终端设备在t2时刻检测到SCell，t1在t2之前，若网络设备发送的是非周期CSI-RS，则会导致终端设备接收不到CSI-RS，若网络设备发送短周期CSI-RS，则在t1-t2这段时间内发送的CSI-RS会浪费；又例如，终端设备在t2时刻检测到SCell，网络设备在t3时刻发送短周期或非周期CSI-RS，t2在t3之前，则在t2-t3这段时间内终端设备没办法利用短周期或者非周期的CSI-RS激活SCell，从而导致终端设备激活SCell的时延较长。
针对上述问题，本申请实施例提出的激活辅小区的方法，若激活的小区为未知的辅小区，则在终端设备检测到辅小区之后，终端设备可以向网络设备发送指示信息，网络设备响应于终端设备发送的指示信息向终端设备发送RS，这样，可以避免终端设备等待网络设备发送周期较长的RS，这样可以降低激活辅小区的时延。
下面结合附图描述本申请实施例提供的用于激活辅小区的通信方法。
图3示出了本申请实施例提供的用于激活辅小区的通信方法300，包括：
S310，在终端设备检测到辅小区之后，终端设备向网络设备发送指示信息，网络设备接收终端设备发送的指示信息。可选地，终端设备可以通过CA中的主小区向网络设备发送指示信息，网络设备通过主小区接收终端设备发送的指示信息。
可选地，终端设备检测到辅小区可以理解为：在激活辅小区的过程前，终端设备在预设的一段时间内没有向网络设备上报过该辅小区的测量结果，则该辅小区为未知的辅小 区，该未知的辅小区被终端设备检测(终端设备可以利用网络设备发送的SSB检测小区，例如SSB可以为现有技术网络设备向终端设备发送的)之后，即可以理解为检测到辅小区。
下面描述终端设备向网络设备发送指示信息的时机。
可选地，可以规定终端设备检测辅小区的时间阈值，在时间阈值内终端设备须完成辅小区检测，则终端设备在检测到辅小区后的第一个发送时机向网络设备发送指示信息，该检测到辅小区后的第一个发送时机不晚于时间阈值后的第一个发送时机。即终端设备在检测到辅小区之后的第一个发送时机就要向网络设备发送指示信息，该检测到辅小区后的第一个发送时机可以早于该时间阈值后的第一个发送时机或最晚在该时间阈值后的第一个发送时机上向网络设备发送指示信息。这样，可以避免终端设备在检测到辅小区后一直不发送指示信息，使得可以快速完成辅小区检测的终端设备及早发送指示信息，保证网络设备快速检测到指示信息，从而触发网络设备发送RS，有助于降低发送RS的时延。
下面结合图4的时间轴描述上述的两个第一个发送时机，T3为上述的时间阈值，可以规定终端设备需要在T4内完成辅小区的检测，若某个终端设备在T1完成了辅小区的检测，则T2为检测到辅小区后的第一个发送时机，终端设备需要在T2向网络设备发送指示信息；T4为时间阈值后的第一个发送时机，T2不会晚于T4，T2最晚于T4相等。这样可以避免终端设备在检测到辅小区之后一直不发送指示信息，有利于快速完成辅小区检测的终端设备及时发送指示信息。
下面描述终端设备向网络设备发送指示信息的资源。下面分三种情况讨论。
情况一，网络设备可以向终端设备发送第一配置信息，第一配置信息用于指示终端设备发送指示信息的第一资源，这样，终端设备就可以在第一配置信息指示的资源上向网络设备发送指示信息，该第一资源可以是用于终端设备发送指示信息的专用资源。
情况二，网络设备向终端设备发送的第一配置信息指示的第一资源可以是终端设备上报层以参考信号接收功率(layer1-reference signal receiving power，L1-RSRP)的资源，即终端设备可以复用在激活辅小区过程中上报L1-RSRP的资源，这样，可以发送指示信息就不需要利用占用额外的资源，从而可以节省资源开销，同时也能避免网络设备需要给终端设备配置专用于发送指示信息的资源所带来的开销。
情况三，网络设备向终端设备发送的第一配置信息指示的第一资源也可以为SR资源或PRACH资源等，能避免网络设备需要给终端设备配置专用于发送指示信息的资源所带来的开销。
可选地，在上述三种情况下，终端设备发送的指示信息可以指示建议网络设备使用的发送波束的信息，例如，发送波束的信息可以为发送波束的索引。
S320，响应于指示信息，网络设备通过辅小区向终端设备发送RS，终端设备接收网络设备通过辅小区发送的RS。
需要说明的是，本申请实施例中的RS可以称为临时(temporary)RS或者额外(additional)RS，即网络设备为辅助终端设备完成快速辅小区激活而为终端设备发送的RS，例如短周期(short interval periodic)RS或者非周期(aperiodic)RS等。该临时RS比网络设备在辅小区上发送的常规RS(如发送周期为20ms的SSB)具有更短的周期或更好的时效性(例如在终端设备需要的时候进行发送从而避免等待周期性RS的时间)，这 样能够降低激活辅小区的时延。
可选地，本申请实施例中，RS可以包括SSB或跟踪参考信号(tracking reference signal，TRS)。具体地，RS包括SSB还是TRS可以是协议规定的，也可以是预配置的本申请实施例对此不作限定。这样，终端设备可以根据网络设备发送的SSB或TRS进行自动增益控制(autonomous gain control，AGC)和精同步等激活过程中需要完成的操作。需要说明的是，这里的AGC与精同步属于激活小区中过程中的步骤。
可选地，RS也可以包括CSI-RS，终端设备根据CSI-RS测量信道状态信息(channel state information，CSI)；终端设备向网络设备发送所述CSI。终端设备基于CSI-RS测量CSI也属于小区激活过程中的步骤，当终端设备向网络设备发送了CSI之后表示小区激活完成。
可选地，网络设备可以响应于所述指示信息向网络设备发送RS，即此时的指示信息用于触发网络设备发送RS，除此之外，指示信息还可以指示网络设备发送波束对应的SSB索引，SSB索引的数量为一个。一个发送波束与一个SSB索引对应，一个发送波束可以发送SSB或者TRS或者CSI-RS。终端设备只上报一个SSB索引，网络设备响应于指示信息在辅小区上发送RS时，可以利用该SSB索引所对应的发送波束向终端设备发送RS。这样，终端设备不需要网络设备通过额外的发送波束指示信息(发送波束指示信息用于指示网络设备向终端设备发送数据或RS时采用的发送波束，例如发送指示信息可以为TCI)向终端设备指示自身的发送波束就可以使得终端设备获知发送RS的发送波束，这样终端设备可以根据网络设备的发送波束确定接收RS的接收波束，并且，终端设备确定该SSB索引对应的SSB的接收波束之后，终端设备可以利用接收波束接收网络设备通过SSB索引对应的发送波束发送的RS，即终端设备期待RS为指示信息指示的SSB索引对应的SSB是QCL的，能够避免网络设备发送的发送波束指示信息所带来的开销和由于信令交互带来的激活时延。
可选地，若RS包括SSB，S320包括：网络设备通过辅小区向终端设备发送该SSB索引对应的SSB，终端设备接收网络设备通过辅小区发送的该SSB索引对应的SSB，这样，网络设备向终端设备仅发送终端设备上报的该SSB索引对应的SSB，不发送其他SSB索引对应的SSB，终端设备可以获知网络设备发送的SSB为自身上报的SSB索引对应的SSB，可以避免为了使得终端设备激活辅小区网络设备需要向终端设备额外发送所有的SSB所带来的开销。
可选地，网络设备发送RS可以按照周期性发送或者非周期性发送，在S320之前，方法还包括：网络设备向终端设备发送第二配置信息，终端设备接收网络设备发送的第二配置信息，第二配置信息用于指示网络设备发送RS的周期和/或次数，S320，包括：响应于指示信息，网络设备根据第二配置信息指示的周期和/或次数通过辅小区向终端设备发送RS，终端设备根据第二配置信息指示的周期和/或次数接收网络设备通过辅小区发送的RS。即第二配置信息可以只指示网络设备发送RS的周期，也可以只指示网络设备发送RS的次数，也可以指示网络设备发送RS的周期和次数。当然第二配置信息还可以指示发送RS的起始时频位置等，本申请实施例对此不作限定。
需要说明的是，本申请实施例中，若RS包括SSB，则第二配置信息指示的网络设备发送SSB的周期为第一周期，和/或，次数为第一次数；若RS包括TRS，则第二配置信 息指示的网络设备发送TRS的周期为第二周期，和/或，次数为第二次数；若RS包括CSI-RS，则第二配置信息指示的网络设备发送CSI-RS的周期为第三周期，和/或，次数为第三次数。第一周期、第二周期和第三周期两两可以相等或者不等，本申请实施例对此不作限定。第一次数、第二次数和第三次数两两可以相等或者不等，本申请实施例对此不作限定。
S330，终端设备根据RS激活辅小区。
需要说明的是，对于未知辅小区，本申请实施例提到的激活辅小区可以包括以下一个或多个步骤：
步骤1、终端设备接收网络设备发送的激活命令；
步骤2、终端设备根据激活命令检测未知的辅小区(基于SSB检测)；
步骤3、若终端设备检测到辅小区则进行AGC(基于SSB进行AGC)；
步骤4、终端设备在层1(layer1)资源上向网络设备上报L1-RSRP和网络设备发送波束的信息(基于SSB或者CSI-RS上报)；
步骤5、终端设备接收网络设备发送传输配置指示(transmission configuration indicator，TCI)，该TCI包括网络设备确定的网络设备的发送波束的信息；
步骤6、终端设备与网络设备进行精同步(基于SSB精同步)；
步骤7、终端设备基于CSI-RS测量CSI，并向网络设备上报测量得到的CSI。
因此，S330中，若RS包括SSB或TRS，则终端设备可以根据SSB或TRS执行上述的步骤3、步骤4、步骤5和步骤6，即上述的步骤3、步骤4、步骤5和步骤6可以基于SSB或者TRS实现；若RS包括CSI-RS，则终端设备可以根据CSI-RS执行上述步骤7。
本申请实施例中，在激活未知辅小区的场景中，终端设备检测到辅小区之后，终端设备可以向网络设备发送指示信息，网络设备响应于该指示信息，向终端设备发送RS，终端设备可以基于RS激活辅小区，可以避免需要等待周期比较长的RS造成的时延，从而有助于降低激活辅小区的时延。即本申请中，网络设备向终端设备发送的RS是基于终端设备发送的指示信息触发发送的，避免终端设备需要等待周期比较长的RS来激活辅小区，从而降低激活辅小区的时延。进一步地，终端设备可以在检测辅小区的预设时间之后的第一个发送机会向网络设备发送指示信息，这样，可以进一步降低网络设备发送RS的时延，有利于降低激活辅小区的时延。终端设备可以在第一配置信息指示的专用的第一资源上向网络设备发送指示信息，也可以在L1-RSRP资源和/或上报网络设备发送波束的信息的资源上向网络设备发送指示信息，有利于节省资源开销。此外，指示信息还可以指示网络设备发送波束对应的一个SSB索引，即网络设备的该一个SSB索引对应的一个发送波束只发送SSB或TRS，网络设备不发送其他的SSB，因此，可以节省信令开销。并且终端设备期待网络设备发送的RS为该发送波束对应的SSB或TRS，因此，可以提高接收效率。
下面结合图5举例描述本申请实施例提供的用于激活辅小区的通信方法500，包括：
S510，网络设备向终端设备发送第一配置信息，终端设备接收第一配置信息，第一配置信息用于指示所述终端设备发送所述指示信息的第一资源。
S520，网络设备向终端设备发送第二配置信息，终端设备接收第二配置信息，第二配置信息用于指示网络设备发送所述RS的周期和/或次数。
需要说明的是，S510可以在S520之前或者之后或者同时进行。
S530，网络设备向终端设备发送激活命令，终端设备接收网络设备发送的激活命令，激活命令用于指示终端设备激活辅小区。
S540，终端设备接收到激活命令之后，根据网络设备发送的SSB(该SSB是现有的网络设备向某个小区发送的SSB，即该SSB为小区级别的SSB，不是针对某个特定终端设备发送的)检测辅小区，若终端设备检测到辅小区，根据检测结果确定网络设备最好的发送波束，终端设备并确定网络设备最好的发送波束对应的自身的接收波束。
S550，在S540中，终端设备需要在预设时间内检测辅小区，终端设备需要在检测辅小区的预设时间之后的第一个发送机会在第一资源上向网络设备发送指示信息。该指示信息用于触发网络设备向终端设备发送RS。
可选地，第一资源可以是专用资源。例如该专用资源可以是随机接入资源(random access channel，RACH)或者调度请求(scheduling request，SR)资源。例如，终端设备可以在方法300中所描述的激活辅小区过程的步骤2之后，步骤4之前在第一资源上向网络设备发送指示信息。
可选地，第一资源可以是L1-RSRP的资源和/或上报所述网络设备的发送波束的信息的资源，这样，终端设备可以在L1-RSRP的资源和/或上报所述网络设备的发送波束的信息的资源上向网络设备上报LS-RSRP、网络设备的发送波束的信息和指示信息。即可以在方法300中所描述的激活辅小区过程的步骤4向网络设备发送指示信息。
S560，网络设备接收到终端设备发送的指示信息之后，向终端设备发送RS，终端设备接收RS。可选地，RS包括SSB，TRS或CSI-RS中的至少一种。具体地，网络设备向终端设备发送SSB、CSI-RS和TRS中的哪种参考信号可以是网络设备是预设的或者配置的，本申请实施例对此不作限定。
具体地，在S560，网络设备可以按照第二配置信息的配置周期和/或次数向终端设备发送RS。
作为一个可选的实施例，在S550中，指示信息还可以包括网络设备的一个发送波束对应的一个SSB索引，网络设备响应于指示信息在辅小区上发送RS时，可以利用该SSB索引所对应的发送波束向终端设备发送RS。这样，终端设备不需要网络设备通过额外的发送波束指示信息(发送波束指示信息用于指示网络设备向终端设备发送数据或RS时采用的发送波束，例如发送波束指示信息可以为TCI)向终端设备指示自身的发送波束就可以使得终端设备获知发送RS的发送波束。
S570，终端设备根据RS激活S540检测到的辅小区。
可选地，S570具体可以包括方法300中激活辅小区的步骤3、步骤6、步骤5、步骤6和步骤7的一项或多项。
以上结合图3至图5，详细得描述了本申请实施例提供的用于激活辅小区的方法，下面结合图6至图13，详细描述本申请实施例提供的用于激活辅小区的装置。
图6示出了本申请实施例提供的用于激活辅小区的装置600，装置600包括：
收发模块610，用于在检测到辅小区之后，向网络设备发送指示信息；
所述收发模块610还用于接收网络设备通过所述辅小区发送的所述RS，所述RS为所述网络设备响应于所述指示信息发送的；
激活模块620，用于根据所述RS激活所述辅小区。
作为一个实施例，所述收发模块610具体用于：
在检测到辅小区后的第一个发送时机向所述网络设备发送所述指示信息，所述检测到辅小区之后的第一个发送时机不晚于检测辅小区的时间阈值后的第一个发送时机。
作为一个实施例，所述收发模块610还用于：接收所述网络设备发送的第一配置信息，所述第一配置信息用于指示发送所述指示信息的第一资源；
所述收发模块610用于向网络设备发送指示信息，包括：所述收发模块610用于在所述第一配置信息指示的所述第一资源上向所述网络设备发送所述指示信息。
作为一个实施例，所述第一配置信息指示的所述第一资源为上报层1参考信号接收功率L1-RSRP的资源。
作为一个实施例，所述指示信息用于指示建议所述网络设备使用的发送波束对应的同步信号/物理广播信道块SSB索引，所述SSB索引的数量为一个。
作为一个实施例，所述装置600期待所述RS与所述指示信息指示的所述SSB索引对应的SSB是准共址QCL的。
作为一个实施例，所述RS包括SSB，所述收发模块用于接收网络设备发送的所述RS，包括：
所述收发模块接收所述网络设备发送的所述指示信息指示的SSB索引对应的SSB。
作为一个实施例，所述RS包括跟踪参考信号TRS。
作为一个实施例，所述RS包括信道状态信息CSI-参考信号RS。
作为一个实施例，所述收发模块610还用于：接收所述网络设备发送的第二配置信息，所述第二配置信息用于指示所述网络设备发送所述RS的周期和/或次数；所述收发模块610用于接收网络设备通过所述辅小区发送的所述RS，包括：所述收发模块610根据所述第二配置信息指示的所述周期和/或所述次数接收所述网络设备通过所述辅小区发送的所述RS。
应理解，本申请实施例中的激活模块620可以由处理器或处理器相关电路组件实现，收发模块610可以由收发器或收发器相关电路组件实现。
如图7所示，本申请实施例还提供一种用于激活辅小区的装置700，该装置700包括处理器710，存储器720与收发器730，其中，存储器720中存储指令或程序，处理器710用于执行存储器720中存储的指令或程序。存储器720中存储的指令或程序被执行时，该处理器710用于执行上述实施例中激活模块620执行的操作，收发器730用于执行上述实施例中收发模块610执行的操作。
应理解，根据本申请实施例的装置600或装置700可对应于本申请实施例的用于激活辅小区的方法300和方法500中的终端设备，并且装置600或装置700中的各个模块的操作和/或功能分别为了实现图3和图5中的各个方法的相应流程，为了简洁，在此不再赘述。
图8示出了本申请实施例提供的用于激活辅小区的装置800，装置800包括：
接收模块810，用于接收终端设备发送的指示信息；
发送模块820，用于响应于所述指示信息通过辅小区向所述终端设备发送参考信号RS。
作为一个实施例，所述发送模块820还用于：
向所述终端设备发送第一配置信息，所述第一配置信息用于指示所述终端设备发送所述指示信息的第一资源；
所述接收模块810用于接收终端设备发送的指示信息，包括：
所述接收模块810在所述第一资源上接收所述终端设备发送的指示信息。
作为一个实施例，所述第一配置信息指示的所述第一资源为所述终端设备上报层1参考信号接收功率L1-RSRP的资源。
作为一个实施例，所述指示信息用于指示建议所述装置使用的发送波束对应的同步信号/物理广播信道块SSB索引，所述SSB索引的数量为一个。
作为一个实施例，所述装置确保所述RS与所述指示信息指示的SSB索引对应的SSB是准共址QCL的。
作为一个实施例，所述RS包括SSB，所述发送模块用于响应于所述指示信息，通过辅小区向所述终端设备发送RS，包括：
所述发送模块820用于响应于所述指示信息，通过所述辅小区向所述终端设备发送所述指示信息指示的SSB索引对应的SSB。
作为一个实施例，所述RS包括跟踪参考信号TRS。
作为一个实施例，所述RS还包括信道状态信息CSI-参考信号RS。
作为一个实施例，所述发送模块820还用于包括：
向所述终端设备发送第二配置信息，所述第二配置信息用于指示所述网络设备发送所述RS的周期和/或次数；
所述发送模块820用于响应于所述指示信息，通过辅小区向所述终端设备发送RS，包括：
所述发送模块820用于响应于所述指示信息，根据所述第二配置信息指示的周期和/或次数通过所述辅小区向所述终端设备发送所述RS。
应理解，本申请实施例中的接收模块810和发送模块820可以由收发器或收发器相关电路组件实现。
如图9所示，本申请实施例还提供一种用于激活辅小区的装置900，该装置900包括处理器910，存储器920与收发器930，其中，存储器920中存储指令或程序，处理器910用于执行存储器920中存储的指令或程序。存储器920中存储的指令或程序被执行时，收发器930用于执行上述实施例中接收模块810和发送模块820执行的操作。
应理解，根据本申请实施例的装置800或装置900可对应于本申请实施例的用于激活辅小区的方法300和方法500中的网络设备，并且装置800或装置900中的各个模块的操作和/或功能分别为了实现图3和图5中的各个方法的相应流程，为了简洁，在此不再赘述。
当该装置为终端设备时，图10示出了一种简化的终端设备的结构示意图。便于理解和图示方便，图10中，终端设备以手机作为例子。如图10所示，终端设备包括处理器、存储器、射频电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理，以及对终端设备进行控制，执行软件程序，处理软件程序的数据等。存储器主要用于存储软件程序和数据。射频电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏， 键盘等主要用于接收用户输入的数据以及对用户输出数据。需要说明的是，有些种类的终端设备可以不具有输入输出装置。
当需要发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。为便于说明，图10中仅示出了一个存储器和处理器。在实际的终端设备产品中，可以存在一个或多个处理器和一个或多个存储器。存储器也可以称为存储介质或者存储设备等。存储器可以是独立于处理器设置，也可以是与处理器集成在一起，本申请实施例对此不做限制。
在本申请实施例中，可以将具有收发功能的天线和射频电路视为终端设备的收发单元，将具有处理功能的处理器视为终端设备的处理单元。如图10所示，终端设备包括收发单元1010和处理单元1020。收发单元也可以称为收发器、收发机、收发装置等。处理单元也可以称为处理器，处理单板，处理模块、处理装置等。可选的，可以将收发单元1010中用于实现接收功能的器件视为接收单元，将收发单元1010中用于实现发送功能的器件视为发送单元，即收发单元1010包括接收单元和发送单元。收发单元有时也可以称为收发机、收发器、或收发电路等。接收单元有时也可以称为接收机、接收器、或接收电路等。发送单元有时也可以称为发射机、发射器或者发射电路等。
应理解，收发单元1010用于执行上述方法实施例中终端设备侧的发送操作和接收操作，处理单元1020用于执行上述方法实施例中终端设备上除了收发操作之外的其他操作。
例如，在一种实现方式中，收发单元1010用于执行图3的S310终端设备侧的发送操作或S320中终端设备侧的接收操作，和/或收发单元1020还用于执行本申请实施例中终端设备侧的其他收发步骤。处理单元1020用于执行图3中的S330，和/或处理单元1020还用于执行本申请实施例中终端设备侧的其他处理步骤。
再例如，在另一种实现方式中，收发单元1010用于执行图5中S510，S520，S530和S560中终端设备侧的接收操作或S550中终端设备侧的发送操作，和/或收发单元1010还用于执行本申请实施例中终端设备侧的其他收发步骤。
当该通信装置为芯片类的装置或者电路时，该芯片装置可以包括收发单元和处理单元。其中，所述收发单元可以是输入输出电路、和/或通信接口；处理单元为该芯片上集成的处理器或者微处理器或者集成电路。
本实施例中的用于激活辅小区的装置为终端设备时，可以参照图11所示的设备。作为一个例子，该设备可以完成类似于图7中处理器710的功能。在图11中，该设备包括处理器1110，发送数据处理器1120，接收数据处理器1130。上述实施例中的激活模块620可以是图11中的该处理器1110，并完成相应的功能。上述实施例中的收发模块610可以是图11中的发送数据处理器1120，和/或接收数据处理器1130。虽然图11中示出了信道编码器、信道解码器，但是可以理解这些模块并不对本实施例构成限制性说明，仅是示意性的。
图12示出本申请实施例的另一种形式。处理装置1200中包括调制子系统、中央处理子系统、周边子系统等模块。本实施例中的用于激活辅小区的装置可以作为其中的调制子 系统。具体的，该调制子系统可以包括处理器1203，接口1204。其中处理器1203完成上述激活模块620的功能，接口1204完成上述收发模块610的功能。作为另一种变形，该调制子系统包括存储器1206、处理器1203及存储在存储器1206上并可在处理器上运行的程序，该处理器1203执行该程序时实现上述方法实施例中终端设备侧的方法。需要注意的是，所述存储器1206可以是非易失性的，也可以是易失性的，其位置可以位于调制子系统内部，也可以位于处理装置1200中，只要该存储器1206可以连接到所述处理器1203即可。
作为本实施例的另一种形式，提供一种计算机可读存储介质，其上存储有指令，该指令被执行时执行上述方法实施例中终端设备侧的方法。
作为本实施例的另一种形式，提供一种包含指令的计算机程序产品，该指令被执行时执行上述方法实施例中终端设备侧的方法。
本实施例中的装置为网络设备时，该网络设备可以如图13所示，装置1300包括一个或多个射频单元，如远端射频单元(remote radio unit,RRU)1310和一个或多个基带单元(baseband unit，BBU)(也可称为数字单元，digital unit，DU)1320。所述RRU1310可以称为收发模块，与图8中的接收模块810和发送模块820对应，可选地，该收发模块还可以称为收发机、收发电路、或者收发器等等，其可以包括至少一个天线1311和射频单元1312。所述RRU 1310部分主要用于射频信号的收发以及射频信号与基带信号的转换，例如用于向终端设备发送RS。所述BBU 1310部分主要用于进行基带处理，对基站进行控制等。所述RRU 1310与BBU 1320可以是物理上设置在一起，也可以物理上分离设置的，即分布式基站。
所述BBU1320为基站的控制中心，也可以称为处理模块，主要用于完成基带处理功能，如信道编码，复用，调制，扩频等等。例如所述BBU(处理模块)可以用于控制基站执行上述方法实施例中关于网络设备的操作流程，例如，生成上述RS等。
在一个示例中，所述BBU 1320可以由一个或多个单板构成，多个单板可以共同支持单一接入制式的无线接入网(如LTE网)，也可以分别支持不同接入制式的无线接入网(如LTE网，5G网或其他网)。所述BBU 1320还包括存储器1321和处理器1322。所述存储器1321用以存储必要的指令和数据。所述处理器1322用于控制基站进行必要的动作，例如用于控制基站执行上述方法实施例中关于网络设备的操作流程。所述存储器1321和处理器1322可以服务于一个或多个单板。也就是说，可以每个单板上单独设置存储器和处理器。也可以是多个单板共用相同的存储器和处理器。此外每个单板上还可以设置有必要的电路。
应理解，本申请实施例中提及的处理器可以是中央处理单元(central processing unit，CPU)，还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解，本申请实施例中提及的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only  memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。
需要说明的是，当处理器为通用处理器、DSP、ASIC、FPGA或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件时，存储器(存储模块)集成在处理器中。
应注意，本文描述的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
还应理解，本文中涉及的第一、第二、第三、第四以及各种数字编号仅为描述方便进行的区分，并不用来限制本申请的范围。
应理解，本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储 在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。

Claims (45)

  1. 一种通信方法，其特征在于，包括：
    在检测到辅小区之后，向网络设备发送指示信息；
    接收网络设备通过所述辅小区发送的参考信号RS，所述RS为所述网络设备响应于所述指示信息发送的；
    根据所述RS激活所述辅小区。
  2. 根据权利要求1所述的通信方法，其特征在于，向网络设备发送指示信息，包括：
    在检测到辅小区后的第一个发送时机向所述网络设备发送所述指示信息，所述检测到辅小区之后的第一个发送时机不晚于检测辅小区的时间阈值后的第一个发送时机。
  3. 根据权利要求1或2所述的通信方法，其特征在于，所述通信方法还包括：
    接收所述网络设备发送的第一配置信息，所述第一配置信息用于指示发送所述指示信息的第一资源；
    其中，向网络设备发送指示信息，包括：
    在所述第一配置信息指示的所述第一资源上向所述网络设备发送所述指示信息。
  4. 根据权利要求3所述的通信方法，其特征在于，所述第一配置信息指示的所述第一资源为上报层1参考信号接收功率L1-RSRP的资源。
  5. 根据权利要求1至4中任一项所述的通信方法，其特征在于，所述指示信息用于指示建议所述网络设备使用的发送波束对应的同步信号/物理广播信道块SSB索引，所述SSB索引的数量为一个。
  6. 根据权利要求5所述的通信方法，其特征在于，终端设备期待所述RS与所述指示信息指示的所述SSB索引对应的SSB是准共址QCL的。
  7. 根据权利5或6所述的通信方法，其特征在于，所述RS包括SSB，所述接收网络设备发送的所述RS，包括：
    接收所述网络设备发送的所述指示信息指示的SSB索引对应的SSB。
  8. 根据权利要求1至6中任一项所述的通信方法，其特征在于，所述RS包括跟踪参考信号TRS。
  9. 根据权利要求1至8中任一项所述的通信方法，其特征在于，所述RS包括信道状态信息CSI-参考信号RS。
  10. 根据权利要求1至9中任一项所述的通信方法，其特征在于，所述方法还包括：
    接收所述网络设备发送的第二配置信息，所述第二配置信息用于指示所述网络设备发送所述RS的周期和/或次数；
    其中，接收网络设备通过所述辅小区发送的所述RS，包括：
    根据所述第二配置信息指示的所述周期和/或所述次数接收所述网络设备通过所述辅小区发送的所述RS。
  11. 一种通信方法，其特征在于，包括：
    接收终端设备发送的指示信息；
    响应于所述指示信息通过辅小区向所述终端设备发送参考信号RS。
  12. 根据权利要求11所述的通信方法，其特征在于，所述通信方法还包括：
    向所述终端设备发送第一配置信息，所述第一配置信息用于指示所述终端设备发送所述指示信息的第一资源；
    其中，接收终端设备发送的指示信息，包括：
    在所述第一资源上接收所述终端设备发送的指示信息。
  13. 根据权利要求12所述的通信方法，其特征在于，所述第一配置信息指示的所述第一资源为所述终端设备上报层1参考信号接收功率L1-RSRP的资源。
  14. 根据权利要求11至13所述的通信方法，其特征在于，所述指示信息用于指示建议网络设备使用的发送波束对应的同步信号/物理广播信道块SSB索引，所述SSB索引的数量为一个。
  15. 根据权利要求14所述的通信方法，其特征在于，网络设备确保所述RS与所述指示信息指示的SSB索引对应的SSB是准共址QCL的。
  16. 根据权利要求14或15所述的通信方法，其特征在于，所述RS包括SSB，所述响应于所述指示信息，通过辅小区向所述终端设备发送RS，包括：
    响应于所述指示信息，通过所述辅小区向所述终端设备发送所述指示信息指示的SSB索引对应的SSB。
  17. 根据权利要求11至15中任一项所述的通信方法，其特征在于，所述RS包括跟踪参考信号TRS。
  18. 根据权利要求11至17中任一项所述的通信方法，其特征在于，所述RS还包括信道状态信息CSI-参考信号RS。
  19. 根据权利要求11至18中任一项所述的通信方法，其特征在于，所述方法还包括：
    向所述终端设备发送第二配置信息，所述第二配置信息用于指示发送所述RS的周期和/或次数；
    其中，所述响应于所述指示信息，通过辅小区向所述终端设备发送RS，包括：
    响应于所述指示信息，根据所述第二配置信息指示的周期和/或次数通过所述辅小区向所述终端设备发送所述RS。
  20. 一种通信装置，其特征在于，包括：
    收发模块，用于在检测到辅小区之后，向网络设备发送指示信息；
    所述收发模块还用于接收网络设备通过所述辅小区发送的参考信号RS，所述RS为所述网络设备响应于所述指示信息发送的；
    激活模块，用于根据所述RS激活所述辅小区。
  21. 根据权利要求20所述的通信装置，其特征在于，所述收发模块具体用于：
    在检测到辅小区后的第一个发送时机向所述网络设备发送所述指示信息，所述检测到辅小区之后的第一个发送时机不晚于检测辅小区的时间阈值后的第一个发送时机。
  22. 根据权利要求20或21所述的通信装置，其特征在于，所述收发模块还用于：
    接收所述网络设备发送的第一配置信息，所述第一配置信息用于指示发送所述指示信息的第一资源；
    所述收发模块用于向网络设备发送指示信息，包括：
    所述收发模块用于在所述第一配置信息指示的所述第一资源上向所述网络设备发送 所述指示信息。
  23. 根据权利要求22所述的通信装置，其特征在于，所述第一配置信息指示的所述第一资源为上报层1参考信号接收功率L1-RSRP的资源。
  24. 根据权利要求20至23中任一项所述的通信装置，其特征在于，所述指示信息用于指示建议所述网络设备使用的发送波束对应的同步信号/物理广播信道块SSB索引，所述SSB索引的数量为一个。
  25. 根据权利要求24所述的通信装置，其特征在于，所述装置期待所述RS与所述指示信息指示的所述SSB索引对应的SSB是准共址QCL的。
  26. 根据权利24或25所述的通信装置，其特征在于，所述RS包括SSB，所述收发模块用于接收网络设备发送的所述RS，包括：
    所述收发模块用于接收所述网络设备发送的SSB索引对应的SSB。
  27. 根据权利要求20至25中任一项所述的通信装置，其特征在于，所述RS包括跟踪参考信号TRS。
  28. 根据权利要求20至27中任一项所述的通信装置，其特征在于，所述RS包括信道状态信息CSI-参考信号RS。
  29. 根据权利要求20至28中任一项所述的通信装置，其特征在于，所述收发模块还用于：
    接收所述网络设备发送的第二配置信息，所述第二配置信息用于指示所述网络设备发送所述RS的周期和/或次数；
    所述收发模块用于接收网络设备通过所述辅小区发送的所述RS，包括：
    所述收发模块用于根据所述第二配置信息指示的所述周期和/或所述次数接收所述网络设备通过所述辅小区发送的所述RS。
  30. 一种通信装置，其特征在于，包括：
    接收模块，用于接收终端设备发送的指示信息；
    发送模块，用于响应于所述指示信息通过辅小区向所述终端设备发送参考信号RS。
  31. 根据权利要求30所述的通信装置，其特征在于，所述发送模块还用于：
    向所述终端设备发送第一配置信息，所述第一配置信息用于指示所述终端设备发送所述指示信息的第一资源；
    所述接收模块用于接收终端设备发送的指示信息，包括：
    所述接收模块在所述第一资源上接收所述终端设备发送的指示信息。
  32. 根据权利要求31所述的通信装置，其特征在于，所述第一配置信息指示的所述第一资源为所述终端设备上报层1参考信号接收功率L1-RSRP的资源。
  33. 根据权利要求30至32所述的通信装置，其特征在于，所述指示信息用于指示建议所述装置的发送波束对应的同步信号/物理广播信道块SSB索引，所述SSB索引的数量为一个。
  34. 根据权利要求33所述的通信装置，其特征在于，所述装置确保所述RS与所述指示信息指示的SSB索引对应的SSB是准共址QCL的。
  35. 根据权利要求33或34所述的通信装置，其特征在于，所述RS包括SSB，所述发送模块用于响应于所述指示信息，通过辅小区向所述终端设备发送RS，包括：
    所述发送模块用于响应于所述指示信息，通过所述辅小区向所述终端设备发送所述指示信息指示的SSB索引对应的SSB。
  36. 根据权利要求30至34中任一项所述的通信装置，其特征在于，所述RS包括跟踪参考信号TRS。
  37. 根据权利要求30至36中任一项所述的通信装置，其特征在于，所述RS还包括信道状态信息CSI-参考信号RS。
  38. 根据权利要求30至37中任一项所述的通信装置，其特征在于，所述发送模块还用于包括：
    向所述终端设备发送第二配置信息，所述第二配置信息用于指示所述网络设备发送所述RS的周期和/或次数；
    所述发送模块用于响应于所述指示信息，通过辅小区向所述终端设备发送RS，包括：
    所述发送模块响应于所述指示信息，根据所述第二配置信息指示的周期和/或次数通过所述辅小区向所述终端设备发送所述RS。
  39. 一种装置，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序，其特征在于，所述处理器执行所述程序时实现权利要求1至10中任一项所述的通信方法。
  40. 一种装置，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序，其特征在于，所述处理器执行所述程序时实现权利要求11至19中任一项所述的通信方法。
  41. 一种通信系统，包括权利要求20-29中任一项所述的装置，和权利要求30-38中任一项所述的装置。
  42. 一种装置，包括处理器，所述处理器与存储器相连，所述存储器用于存储计算机程序，所述处理器用于执行所述存储器中存储的计算机程序，以使得所述装置执行如权利要求1至10中任一项所述的方法。
  43. 一种装置，包括处理器，所述处理器与存储器相连，所述存储器用于存储计算机程序，所述处理器用于执行所述存储器中存储的计算机程序，以使得所述装置执行如权利要求11至19中任一项所述的方法。
  44. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机程序，当所述计算机程序被运行时，实现如权利要求1至10中任一项所述的方法。
  45. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机程序，当所述计算机程序被运行时，实现如权利要求11至19中任一项所述的方法。
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